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OnMobile Placement Paper : OnMobile Placement Paper Reva College Bangalore 12 November 2010



1) What will be smallest number made by 0 or 1 and divisible by 450.
Ans: 11111111100

2) Find out the all pairs of two numbers such that their sum and multiplication (both of two digit) and after reversing the sum we got multiplication.
Ans: (9,9)

3) A school has 300 student. Every student read at least one of phy, maths and chem.
Number of students of read only physics is half of students read physics.
Number of students of read only Maths is 1/3 of students read Maths.
Number of students of read only Chemistry is 1/4 of students read chemistry.
And also
Number of Students of physics= Number of Students of maths= Number of Students of Chem.
Find out the Number of Student of physic.

Ans: 156

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0.Onmobile posted by Nabeel
----------
One guy has Rs. 100/- in hand. He has to buy 100 balls. One football costs Rs. 15/, One
Cricket ball costs Re. 1/- and one table tennis ball costs Rs. 0.25 He spend the whole Rs. 100/- to buy the
balls. How many of each balls he bought?
F + C + T = 100-------------eq1
15F + C + 0.25T = 100-------------eq2
eq1=eq2 .solve to get F=3T/56 ;F=3,T=56,C=41
==========================
1.Bird and the train:
-----------------------

The distance between Station Atena and Station Barcena is 90 miles. A train starts from Atena towards
Barcena. A bird starts at the same time from Barcena straight towards the moving train. On reaching the
train, it instantaneously turns back and returns to Barcena. The bird makes these journeys from Barcena to
the train and back to Barcena continuously till the train reaches Barcena. The bird finally returns to
Barcena and rests. Calculate the total distance in miles the bird travels in the following two cases:
(a) the bird flies at 90 miles per hour and the speed of the train is 60 miles per hour there is no need to consider their meeting pt at all.the train has been running for 90miles/(60miles/hr)=1.5hrs.bird flies till train reaches destination frm strting pt.so bird flies for1.5hrs at the vel given(90).so dist=1.5*90=135miles

(b) the bird flies at 60 miles per hour and the speed of the train is 90 miles per hour time of train=1hr.so dist of bird=60*1=60miles
2.Tennis Championship
-------------------
A tennis championship is played on a knock-out basis, i.e., a player is out of the tournament when he loses
a match.
(a) How many players participate in the tournament if 15 matches are totally played?
C u don,t need to sum it up.since it,s a knock out only 1 person emerges winner finally.so15+1=16is
answer.becos after15 matches finally we shud,ve 15losers and 1winner.

(b) How many matches are played in the tournament if 50 players totally participate? -> 49.its always
one less thn no of players as per the idea ive given above.so no need to check okay cos its always true.ans is 49.
old enough:

"When I add 4 times my age 4 years from now to 5 imes my age 5 years from now, I get 10 times my current age. How old will I be 3 years from now?"
Let x= current age
4(x+4)+5(x+5)=10x ;so x=Ò 41 years

3.Gold coins:
A rich merchant had collected many gold coins. He did not want anybody to know about them. One day, his wife
asked, "How many gold coins do we have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 37 times the difference between the two numbers equals the difference between the squares of the two numbers." The wife looked puzzled. Can you help the merchant,s wife by finding out how many gold Ò

37(x-y)=x^2-y^2. u no tht x^2-y^2=(x-y)(x+y).so (x-y) cancels on both sides to give x+y=37.so sum of unequal
halves=37 which is the req answer.
4.Football Matches

A set of football matches is to be organized in a "round-robin" fashion, i.e., every participating team plays a match against every other team once and only once. If 21 matches are totally played, how many teams participated?
Ò ans:7 teams okay.for a match u need 2 teams.suppose there r totally ,n ,teams. Now uve to choose 2 teams out of ,n, teams.so answer
=no of such choices=no. of possible combinations. So we,ve ans = nC2(ncombination2)=21;solve to get n=7.
Sol: n(n-1)/2=21. so n=7.if u don,t understand c the graph below each team plays no. of matches=no of teams ahead of
it. One bar ,|, represents one team.

6 5 4 3 2 1 0 -----------21 last team is written as 0 matches becos this team has already played with all other teams-hence sum of matches =6+5+4+3+2+1=21 which is correct only if no of
teams =7
5.

Glenn and Jason each have a collection of cricket balls. Glenn said that if Jason would give him 2 of his balls they would have an equal number; but, if Glenn would give Jason 2 of his balls, Jason would have 2 times as many balls as Glenn. How many balls
does Jason have? Ò 14
1. G+2=j-2
2. 2(G-2)=J+2.
solve these 2 to get
J=14
6. Monkeys and bananas:

Suppose 8 monkeys take 8 minutes to eat 8 bananas.
(a) How many minutes would it take 3 monkeys to eat 3 bananas? Sol:each mky takes 8 min to eat a banana
(b) How many monkeys would it take to eat 48 bananas in 48 minutes
ans:8m=48 m=6
7.Vacation time

It was vacation time, and so I decided to visit my cousin,s home. What a grand time we had! In the mornings, we both would go for a jog. The evenings were spent on the tennis court. Tiring as these activities were, we could manage only one per day,
i.e., either we went for a jog or played tennis each day. There were days when we felt lazy and stayed home
all day long. Now, there were 12 mornings when we did nothing, 18 evenings when we stayed at home, and a total of 14
days when we jogged or played tennis. For how many days did I stay at my cousin,s place?
Use sets and venn diagram to solve such questions.a,b
,aub,anb etc.
12=tennis+leave
18=jog +leave
so jog-tennis=6
again jog+tennis=14.so solve and get
jog=10,leave=8,tennis=4.so tot=22

8.The Carpenter and the Nails

A 31" x 31" square metal plate needs to be fixed by a carpenter on to a wooden board. The carpenter uses nails all along the edges of the square such that there are 32 nails on each side of the square. Each nail is at the same distance from the neighboring nails. How many nails does the carpenter use?
Ans= 32*2 + 30*2=124

9.Old Man Wrinkle
------------------------
Man Wrinkle spent one-fourth of his life as a boy, one-eighth as a youth, and one-half as an active man.
If Man Wrinkle spent 8 years as an old man, then how many years did he spend as an active man?
(1/4)y+(1/8)y+(1/2)y =p; where y =tot life time.
y-p=8.since p=(14/16)y
we,ve y=64
active age=32


10 A farmer has C chickens.A sack of feed comes for 9 days.As the feed cost is increasing the farmer sells some chickens and retains 12 chicken.If he reduces the feed quantity by 10% .Then he observesthat the feed comes for 30 days.What is C?
sol:
C chickens can b fed for 9 days.so C chick can eat 1/9 in 1 day.
so 1 chick can eat
(1/9C)in one day. after his reduction one chick gets to eat only 90% of wht it used to eat in one day. so new feed value=0.9*(1/9C)for 1day.but now he has only 12 chicks. that means as per new rule feed is suitable for 12 chicks for 30 days.
i.e.
0.9*(1/9C)*12*30=1. solve to get C=36
Ans:36

23.
to be 10 min earlier means car has been driven for 10 min less thn usual. i.e 5 min in fwd jrney and 5min in bwd jrny.normally
car reaches station at 6pm. today since it has to drive only 5 min less it reaches at 5:55.since he strtd to walk at 5pm.hes been walking till 5:55 since thts wen he sees the car.so 55 min

27.

m:n t1:t2
ans:(mt2-mt1)/(t1-t2).don,t remember how this eq is obtained but its given in lower class mathematics texts.

38.

its not ur mistake tht u don,t get this answer.this question of shak devi is confusing becos of its grammar. actually its a simple one.in the last sentence of the qs wht she means is tht there r still 6miles to the crossing wen he met train and not tht train has gone 6miles beyond crossing.with this idea in mind lemme explainb the solution. hes late by 25 min.so if his normal time at crossing is 8am; today he reaches at 8:25only .also he meets train 6miles before crossing.tht means at tht time wen they meet he is 6 miles away frm crossing.his speed is 12m/hr. so time at which they must have met shud b 7:55.as per our idea train shud b there at the crossing by 8 am.nw its got only 5min to 8am to b at the crossing.since crossing and road r parallel train also got to cover 6 miles to b at crossing. so its got 5 min to cover 6 miles.so speed of
train=6*12=72m/hr
44.Say he took m kilos of rs32 powder and n kilos of 40 powder.since his profit is 25% we have 125% *cost priceof 1kilo =43.so cost price=rs34.4 for 1kilo of mixture but cp of 1 kilo mixture is (32m+40n)/(m+n)=34.4 solve to get m/n=7/3.so ratio is 7:3.so to get 100kg he shud mix 70kg of rs32 and 30 kg of rs40

77.The main line train starts at 5.00AM and the harbour line train starts at 5.02AM.Each train has the frequency of 10
minutes.If a guy goes in the morning at a random time what is the probability of he getting main line train?
sol:a very easy question but may confuse many suppose the person arrives at station just after 5am.he has 2 min left for the harbr line train. that means he gets hrbr line train if he arrives at any time bet 5 and 5:02am.but if he arrives after 5:02 am next train is at 5:10am(given freq is 10 min).tht means he can arrive at any time bet 5:02 and 5:10am to catch it.so he has 8
minutes(5:10-5:02)at his disposal.s prob of getting main line train=8/freq and tht of harbr train=2/freq.
freq=10.
so prob=0.8--main line
" " " =0.2--harb line
Ans: 0.8

98 Wen he covers one circumference of the post he covers a height of 4 feet.but since he covers the circumference spirally,he must have travelled more thn 4feet to reach tht height.apply pythagoras theorem to get root of(4square+3square)=5.i hope u understand this.the dist travelled by squirrel is the hypotenuse of right angled triangle with 3 as base and 4 as height.so he actually climbs 5 feet to reach a height of 4feet.so inorder to reach 16 feet he climbs 20
feet.
ans :20 feet

Qs.101 Start thinking in the right direction. The catch is in the no. 11. The sum has to be a whole no divisible by 11(clr frm
question).moreoverjust assume tht a persons age can,t be more than 150(worst case).so sum can,t b greater than 300 i.e. sum of ages is not more than a 3 digit no.now if a person is to marry his age won,t b a single digit no.that means we can eliminate ages upto
9.i.e we can eliminate the maximum sum obtained from one digit nos i.e 18. Hence we can eliminate the possibility of sum =11
which is less than 18.so focus on 2digit sums first.consider sums divisible by 11 frm 55 only.becos even if they were equal aged we can c they r definitely mature enuf to marry(55/2).our assumption is valid only if a sensible person is putting the
question becos he may be thinking of child marriage also.Since given husband is SENIOR they can,t b equal aged
also.wen we eliminate each possibility starting frm 55 we can fix upon a sum of 99.once we get this its quite
easy na. Note tht the difference bet their ages is a factor of
99.
So we have sum =99 and diff=9
So ages are 54 and 45.

108

let initital length of candles be z rate of burn of each is z/5 and z/4 consider tht each has been burning for ,t, hrs wen
light came. at tht time if length remaining of the smaller candle is y then tht of bigger one is 4y.
eq1: (z/5)*t=z-4y
eq2: (z/4)*t=z-y
divide eq1 and eq 2 to liminate ,t, and L.H.S ,z,.now we get a rel bet z,y frm R.H.S now we know z=ky wer k is evaluated frm above.we alkso know z burns in 4 hrs for smaller candle. so z-y i.e z-(z/k) burns in how many hrs.we get 3.75 hrs.

114. one day food of cow and horse is 1/40: c+h=1/40----1
" " horse " sheep is 1/60: h+s=1/60----2
" " cow " sheep is 1/90: c+s=1/90----3
add each eq to get 2(c+h+s)=(1/40+1/60+1/90). combined one day,s work is c+h+s.time taken to finish=1/(c+h+s).


10

extra distance covered by thief=27* dist covered by him in each stride. given tht dist cov by policeman in 2steps and thief in
5 steps r same.let it b "y". thief covers y/5 and police y/2 dist in each step respectively. also given: time of 5 steps of police=time of 8 steps of thief.let time taken be 1 unit for this-----(assumption1)

so dist cov in 5steps of police =5y/2 in unit time----eq(1)
dist " 8 " " thief =8y/5 " " " ----eq(2)
let the common time of run of both(i.e.excluding the time for 27 steps of thief) be "t" units, now we know ;to catchup with the thief police has to cover the same distance totally coverd by thief which is equal to 27steps* dist per step of thief + dist run by him for the time t(which is no of steps it time "t" * y/5) i.e. 27 *(y/5) + (8y/5)*t
------eq(3)
{frm eq(2)}
total dist covered by police=t*(5y/2)----eq(4)
we know eq(3)=eq(4)
so 27y/5 + 8yt/5 = 5yt/2; y gets cancelled.u get
t=6units. in unit time we know police takes 5 steps and thief tkes 8steps frm (assumption1). so in 6 units of time police takes 5*6=30 steps. "" " " thief " 8*6=48 steps.thief has taken totally 48+27=75steps. so 30 steps is taken by police to catch thief.
Qs.30
let radius of hind wheel(bigger) =R " " fore wheel(smaller) =r

first case: let No of rot of hind wheel = N so " " fore " = N+4 therefore 2*pi*R*N = 2*pi*r*(N+4)=96-----------eq(1) second case: since radius changes no of rot to cover same dist changes.
let No of rot of hind wheel = n
so " " fore " = n+2
therefore 2*pi*(4/3)*R*n =
2*pi*(3/2)*r*(n+2)=96-----eq(2)
L.H.S of eq(1)/ L.H.S of eq(2) =96/96=1
i.e. R*N=(4/3)*R*n.
so 3N=4n------eq(3)
do the same for R.H.S of eq(1),eq(2) to get
2(N+4)=3(n+2).put eq (3) to get n=6
put in eq(2) to get circumference(i.e 2pi*r)=8,12 for fore and hind wheel.
Qs.37

4:05
B-----------------M-------T
<-------y--------><--p--->
B=Bangalore, T= Tumkur,M=meeting point
y= distance BM
p= distance MT
Vbt=velocity of guy frm B to T
Vtb= " " T to B
let time at which they reach their destinations be "t".total dist cov by both is same since route is
same. so
1. Vbt*t=Vtb(t-2hrs) becos TB guy strtd 2hrs after BT guy time bet 2 pm and 4:05pm =2 and 5/60 hrs
" " 12 o,clk " " =4 and 5/60 hrs. consider dist covered by each in reaching M.
2. Vtb * (2 and 5/60)=p and Vbt * (4 and 5/60) =y
also consider the rem dist to b covered by each after meeting.
3. Vtb * (t-2and 5/60))=y and Vbt * (t-4and 5/60)=p so we have
1. Vbt*t=Vtb(t-2hrs)
2. Vtb * (2 and 5/60)=p and Vbt * (4 and 5/60) =y
3. Vtb * (t-2and 5/60))=y and Vbt * (t-4and 5/60)=p
L.H.S of eq(2)=R.H.s of eq(3)
R.H.S of es(2)=L.H.S of eq(3).
3 equations 3 unknowns.solve to get t
----------------------------------
Qs.65 easy one but remmeber this may b difficult for sum people.so u have an advantage
==============
each shud get the cost of 25 sheeps to make equal money.since i have 30 sheeps i must give radha the price of 5 to make it 25 each. so cost of 5 sheep =150 i.e cost per sheep=30.
---------------------------------------
Qs.104
=======
1. o+y+c=100
2. 3o+2y+0.5c=100

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Aptitude
1. A family, planning a weekend trip, decides to spend not more than a total of 8 hours driving. By leaving early in the morning, they can average 40 miles per hour on the way to their destination. Due to the heavy Sunday traffic, they can average only 30 miles per hour on the return trip. What is the farthest distance from home they can plan to go?
(a) 120 miles or less (b) Between 120and 140 miles (c) 140 miles
(d) Between 140 and 160 miles (e) 160 miles or more
2. A car is filled with four and half gallons of fuel for a round trip. If the amount of fuel taken while going is 1/4 more than the amount taken for coming, what is the amount of fuel consumed while coming back?
(a) Less than 2 gallons (b) 2 gallons (c) 2 1/2 gallons
(d) 3 gallons (e) More than 3 gallons

3. A 3-gallon mixture contains one part S and two parts R. In order to change it to a mixture containing 25% S, how much R should be added?
(a) 1/2 gallon (b) 2/3 gallon (c) 3/4 gallon (d) 1 gallon (e) 1 1/2 gallon

4. A tree grows only 3/5 as fast as the one beside it. In four years the combined growth of the two trees is eight feet.
How much does the shorter tree grow in two years?
(a) Less than 2 feet (b) 2 feet (c) 2 1/2 feet
(d) 3 feet (e) more than 3 feet.
5. Wind flows at 160 miles in 330 minutes, for traveling 80 miles how much time does it require?
(a) 1 hour 30 minutes (b) 1 hour 45 minutes (c) 2 hours
(d) 2 hours 45 minutes (e) 3 hours

6. A stationary engine has enough fuel to run 12 hours when its tank is 4/5 full. How long will it run when the tank is 1/3 full?
(a) Less than 2 hours (b) 2 hours (c) 3 hours
(d) 4 hours (e) 5 hours
7. If A is traveling at 72 km per hour on a highway. B is traveling at a speed of 25 meters per second on a highway. What is the difference in their speeds in meters per second?
(a) 1/2 m/sec (b) 1m/sec (c) 1 1/2 m/sec (d) 2 m/sec (e) 3 m/sec
8. A salesperson by mistake multiplied a number and got the answer as 3, instead of dividing the number by 3. What is the answer he should have actually got?
(a) 0 (b) 1/3 (c) 1 (d) 2 (e) 3
9. If the length of a rectangle is increased by 30% and the width is decreased by 20%, then the area is increased by...
(a) 10% (b) 5% (c) 4% (d) 20% (e) 25%

10. In the class of 40 students, 30 speak Hindi and 20 speak English. What is the lowest possible number of students who speak both the languages?
(a) 5 (b) 20 (c) 15 (d) 10 (e) 30

11. The most economical prices among the following prices is:
(a) 10 kilo for Rs.160 (b) 2 kilo for Rs.30 (c) 4 kilo for Rs.70
(d) 20 kilo for Rs.340 (e) 8 kilo for Rs.130

12. A truck contains 150 small packages, some weighing 1 kg each and some weighing 2 kg each. how many packages weighing 2 kg each are in the truck if the total weight of all the packages is 264 kg?
(a) 36 (b) 52 (c) 88 (d) 124 (e) 114
13. A man was arrested for exceeding the speed limit by 10 miles an hour. A second man was charged with exceeding the same limit by twice as much. The second man was driving 35 miles per hour. What was the speed limit?
(a) 10 miles per hour (b) 15 miles per hour (c) 20 miles per hour
(d) 25 miles per hour (e) 30 miles per hour

14. One year ago Pandit was three times his sister,s age. Next year he will be only twice her age. How old will Pandit be after five years?
(a) 8 (b) 12 (c) 11 (d) 13 (e) 15
15. If two pencils cost 8 cents, then how much do 5 pencils cost?
(a) 18 cents (b) 20 cents (c) 22 cents (d) 23 cents (e) 24 cents



1) ONE RECTANGULAR PLATE WITH LENGTH 8INCHES, BREADTH 11 INCHES AND
2 INCHES THICKNESS IS THERE.WHAT IS THE LENGTH OF THE CIRCULAR ROD
WITH DIAMETER 8 INCHES AND EQUAL TO VOLUME OF RECTANGULAR PLATE?
ANS: 3.5 INCHES
2) WHAT IS THE NUMBER OF ZEROS AT THE END OF THE PRODUCT OF THE NUMBERS
FROM 1 TO 100

3) In some game 139 members have participated every time one fellow will get bye what is the number of matches to choose the champion to be held?
ans: 138
4) one fast typist type some matter in 2hr and another slow typist type the same matter in 3hr. if both do together in how much time they will finish.
ans: 1hr 12min
5) in 8*8 chess board what is the total number of squares refer Model
ans:204
6) falling height is proportional to square of the time. one object falls 64cm in 2sec than in 6sec from how much height the object will fall.
7) Gavaskar average in first 50 innings was 50. After the 51st innings his average was 51 how many runs he made in the 51st innings
8)2 oranges, 3 bananas and 4 apples cost Rs.15. 3 oranges 2 bananas 1 apple costs Rs.10. what is the cost of 3 oranges, 3 bananas and 3 apples?
Ans: Rs.15
9) In 80 coins one coin is counterfeit what is minimum number of weighing to find out counterfeit coin
10)In a company 30% are supervisors and 40% employees are male. if 60% of supervisors are male. What is the probability that a randomly chosen employee is a male or female?
11) statement: all green are blue are blue, all blue are white
conclusion:
I) some blue are green II) some white are green
III)some green are not white IV) all white are blue
a) he has given four choices like gre type
12)all teachers are students. some students are girls.this type of questions are there. we cant able to reproduce them.

OnMobile Placement Paper : On Mobile Placementpapers

OnMobail Asia Test Sample Paper
Test consist of Aptitude test having different mark mark for each question.

There are 10 marbles each of 5 diff colors. what is the min. num of marbles to be taken out so that at least 3 marbles are of same color?

You need 2 kill a dragon with 3 heads & 3 tails. You have a magic sword that can cut 1 head, 2 heads, 1 tail, or 2 tails in 1 swing.
if 1 head is cut -> a new head grows
if 1 tail is cut -> 2 tails grow
if 2 tails r cut -> 1 head grows
if 2 heads are chopped -> nothing grows. What dragon is min. num of swings 2 be made?

Slow train runs b/w Blore & Mumbai, up as well as down. It starts at 10:00pm everyday & reaches destination by 11:30pm after 3 days. If u travel by Slow train, how many such trains will u encounter during journey?

A num of birds, black & white, r sitting on thhe tele wire. There is at least 1 bir of each color, also whenevr 2 birds are seperated by 4 or 7 other boirds of any color, both birds r of same color. Wot is the max. num of birds dat can b seated in this fashion?

5 ppl, A, B, C, D, E are supposed 2 cover a certain distance from their car to a house. There is only 1 umbrela dat can b shared by 2 ppl at a time.
It takes 1min for A 2 cover the dist, B->2 min, C->5min, D->10min, E->15min.
Wot is d quickest poss time 4 the entire grp 2 get into the house?

Mr.X belongs 2 a grp of 8 ppl including himself. In d meeting, nobody shakes hands with the same person more than once but everyone shakes hands with at least 1 person.
After the meeting is over, Mr.X realizes dat all the other ppl in the party had shook a diff num of hands. How many hands did Mr.X shake?

In a contest 3 probs, A, B, C r given
->25 ppl of the total num of them solved at least 1 prob each.
->Of all the contestants who did not solve A, the num who solved B was twice the num who solved C.
->num of ppl who solved only A was 1 more than num who solved A & atleast 1 other prob.
->Of all stud who solved just 1 prob, half didn,t solve A

OnMobile Placement Paper : CDAC-ACTS, PUNE

Written exam

For c please refer ‘c under dos’ by Sonam Desai. In c++ certain code snippets were given and there output was asked. In java questions were from file handling, threading, exception handling and inner classes. Try to refer ‘SCJP Kathy Sierra’ to crack those questions.

Technical round

In technical round OnMobile used to emphasize on problem solving. They gave me three puzzles to solve. Yes I took time to solve them but I was able to go through .

Puzzle 1

I can’t remember exactly but a 32 digit number was given and I was asked to change it to 122333444455555… without using any arithmetic operation (+,-,/,*). The question was quiet simple we have to use >>> (right shift operator) of JAVA to do this with cross referencing.

Puzzle 2

A figure was given that consists of squares, triangles, circles and lines, They asked me count total number of each figures. I will suggest to count these figures during the creation of the figure only otherwise it will be quite difficult to count them.

Puzzle 3

A king has prisoner three people , the king have 4 caps with him 2 red and 2 yellow, he randomly put the cap on their hats. The three prisoners were standing in a line with the first one facing towards a wall.

A man among them said that I am wearing a particular color of hat and he was right, as a result all of the three got free from jail. Who was that prisoner.

Answer : 2 position.

After that I was asked to solve 2 aptitude questions as I left them in written paper. I solved one out of them. They asked me why u left these questions besides there was no negative marking. I gave a smile and said there is no guess in mathematics sir.

Programs

1 )I was given a program on file handling. A file1 consists of 1000 mobile numbers and second file2 also consists of 1000 mobile numbers. I was asked to find the numbers which were common in both files and write them to a third file file3.

Ans -This was quite easy open both the files in read mode and read them till the EOF file is not reached. Store the numbers in a long variable and compare them, if during comparison u find them same write them to a file3.

Try to read and write using binary streams. They were not looking just at logic but also how efficient is the program. Like which streams have u used.

2) They gave me a situation that there is a newly established company XYZ Ltd. Has employees ( with details as empid, empname, location, salary) and company has opened its office at four different locations (east, west, north, south). I was asked to create a database with minimum number of tables, each table must contain only relevant columns.

It took time as it involved normalization but I was able to do it. The minimum number of tables required was three. One containing the employees details, second containing the zones details and third containing the zone and employee details.

After the programming they asked me about

Difference between wait and sleep,

notify (), notifyAll() are the methods of which class -> Ans :Object class

What is the difference between synchronized method and synchronized block.

In c++ they asked about RTTI and STL.

Lastly they asked about my Project which was based on struts 2.0 and hibernate 3.0



HR ROUND

I was too nervous at this time.

Tell me about yourself

Your strengths and weakness with proves.

Objective and goal of your life.

They asked me a question that I can’t understand till now also. They gave me a fill in the blank and I was asked to fill YES/No and explain why?

--------, I am a fool.

I got blanked for few seconds, then I opted for yes and then tried to justify it thorough different examples.

They were impressed at this question.

I was asked about the company and there products.

My hobbies

Salary I expect, I will like to suggest that that don’t try to be ideal at this question . Try to be practical and say I want to a package so that I can sustain in the city where I will be posted and even feel secure.

Lastly They gave me a situation that if a girl is being robbed by 3-4 people. Will I save her or not?

I was blank at this moment. I took about 20 seconds to think, I was feeling that this question will let me out of the room. Lastly I said no I will not help. In the panel there was a lady, she was staring at me with red eyes. She was not looking happy at all.

Then they said what about if she might be your sister? Now I was caught. I replied yes definitely I would have helped her if she was my sister. They were laughing at me. The lady told u have a diplomatic nature we don’t want a person like u in our company. I justified my answer by saying as she might also belong to the same group of robbers. Lastly I justified my answer and the lady laughed and said good you can bear pressures.


OnMobile Placement Paper : AMC ENGG COLLEGE ,BANG

HI FRIENDS… THIS IS HARSHA…( KUPPAM ENGINEERING COLLEGE CSE07-11 BATCH)

I AM HERE TO SHARE MY WRITTEN TEST EXPIRIENCE OF “ONMOBILE” COMPANY…

IT IS VERY GOOD,,, AND I EXPERIENCED FOR THE FIRST TIME THIS TYPE OF WRITTEN TEST….. & I THINK THIS IS THE TRUE EVALUATION OF TALLENT OF A PERSON…..

THE TEST CONTAINS OF FOUR “3” MARKS & FOUR “7” MARKS QUESTIONS TOTALLY “40” MARKS… TIME ONE HOUR… TOTALLY APTITUDE…( NOT AN OBJECTIVE TYPE )

&

TECHNICAL ”12” QUESTIONS OUT OF “11” TWO MARKS & ONE “3” TOTAL “25” MARKS

(IT MOSTLY CONTAINS “COMPUTER NETWORKS”,”SQL”.. {IT IS OBJECTIVE})



1.THERE ARE TWO CONTAINERS ‘A’&’B’ IN WHICH ‘A’ CONTAINS 100 LITERS OF OIL & ‘B’ CONTAINS 100 LITERS OF MILK. IF 15 LTS OF OIL IN ‘A’ MIX IN ‘B’ & AGAIN 15 LTS OF MIXTURE IN ‘B’ MIX IN ‘A’. THEN WHICH CONTAINER IS MORE CONTAMINATED? 3M

2.TWO TRAINS ARE IN SAME TRACK OF 150 KM APPART FROM EACH OTHER. RUNNING BOTH AT A SPEED OF 50KM/H.A BIRD ON ONE TRAIN STARTED AT A SPEED OF 90 KM/H TOWARDS OTHER TRAIN AFTER REACHING ON THE OTHER TRAIN IT RETURNS TO THE FIRST TRAIN WHERE IT STARTED. HOW MANY KM THE BIRD TOTALLY FLY BEFORE THE TRAIN GET CLASHED? 3M

3. A BAG CONTAINS 50 MARBLES OF FIVE DIFF COLOURS EACH 10 IN NUMBER.A MAN BLIND FOLDED ASK TO TAKE THE THREE MARBLES FROM THE BAG. WHAT IS THE MIN NO.OF MARBLES HE WANT TO TAKE SUCH THAT ATLEAST ‘3’ MARBLES OF SAME COLOUR? 3M

4.IN A COUNTRY PEOPLE STOP GIVING BIRTH WHEN A BOY TAKEN BIRTH. AND THEY CONTINOUSLY GIVING BIRTH UNTIL THEY HAVE A BOY. NOW THE QUESTION IS WHAT IS THE PROROTION OF BOYS & GIRLS IN THAT COUNTRY? 7M

5. FIND THE FOUR +VE INTEGERS SUCH THAT

1. IF PRODOUCT KNOWS,THE 4 INT WOULD HAVE BEEN KNOWN.

2. IF SUM OF SQUARES KNOWS, THE 4 INT WOULD HAVE BEEN KNOWN.

3.IF SUM KNOWS, THE 4 INT WOULD NOT HAVE BEEN KNOWN . 7M

6.A MAJIC DRAGON OF WHICH IT HAS ‘3’HEADS & ‘3’ TAILS. YOU HAVE A MAJIC SWORD IN WHICH U CAN CUT ‘1’ OR ‘2’ HEADS OR TAILS AT A TIME. IF U CUT ONE TAIL TWO TAILS WII GROW. TF U CUT ‘2’ TAILS ONE HEAD GROWS. IF U CUT ONE HEAD ANOTHER HEAD GROWS. IF U CUT TWO HEADS THEN NOTHING GROWS . THEN WHAT IS THE MIN NO OF SWINGS DO U WANT TO KILL THE DRAGON? 7M

7. A PLATOON OF 50 SOLDIERS OF 50 MTS DOING A MARCHFAST. THE LAST SOLDIER CONTAIN A LETTER & HE WANT TO GIVE IT TO FIRST SOLDIER IN PLATOON. HE RAN TO HIM AND RETURN TO HIS ORIGINAL POSITION AFTER GIVING THE LETTER. THEN HE REALISES THAT THE PLATOON MOVES 50 MTS. NOW HOW MUCH DISTANCE HE RAN TOTALLY? 3M

8. SUPPOSE THERE ARE 1-9 CITIES. THE NAME OF EACH CITY IS DIVISIBLE BY 3(EX: 1-2, 12 IS DIVISIBLE BY 3). FIND THE NO OF WAYS TO REACH THE CITY 8. WITH BREAKUPS? 7M

OnMobile Placement Paper : AMC ENGG COLLEGE ,BANG

HI FRIENDS… THIS IS HARSHA…( KUPPAM ENGINEERING COLLEGE CSE07-11 BATCH)

I AM HERE TO SHARE MY WRITTEN TEST EXPIRIENCE OF “ONMOBILE” COMPANY…

IT IS VERY GOOD,,, AND I EXPERIENCED FOR THE FIRST TIME THIS TYPE OF WRITTEN TEST….. & I THINK THIS IS THE TRUE EVALUATION OF TALLENT OF A PERSON…..

THE TEST CONTAINS OF FOUR “3” MARKS & FOUR “7” MARKS QUESTIONS TOTALLY “40” MARKS… TIME ONE HOUR… TOTALLY APTITUDE…( NOT AN OBJECTIVE TYPE )

&

TECHNICAL ”12” QUESTIONS OUT OF “11” TWO MARKS & ONE “3” TOTAL “25” MARKS

(IT MOSTLY CONTAINS “COMPUTER NETWORKS”,”SQL”.. {IT IS OBJECTIVE})



1.THERE ARE TWO CONTAINERS ‘A’&’B’ IN WHICH ‘A’ CONTAINS 100 LITERS OF OIL & ‘B’ CONTAINS 100 LITERS OF MILK. IF 15 LTS OF OIL IN ‘A’ MIX IN ‘B’ & AGAIN 15 LTS OF MIXTURE IN ‘B’ MIX IN ‘A’. THEN WHICH CONTAINER IS MORE CONTAMINATED? 3M

2.TWO TRAINS ARE IN SAME TRACK OF 150 KM APPART FROM EACH OTHER. RUNNING BOTH AT A SPEED OF 50KM/H.A BIRD ON ONE TRAIN STARTED AT A SPEED OF 90 KM/H TOWARDS OTHER TRAIN AFTER REACHING ON THE OTHER TRAIN IT RETURNS TO THE FIRST TRAIN WHERE IT STARTED. HOW MANY KM THE BIRD TOTALLY FLY BEFORE THE TRAIN GET CLASHED? 3M

3. A BAG CONTAINS 50 MARBLES OF FIVE DIFF COLOURS EACH 10 IN NUMBER.A MAN BLIND FOLDED ASK TO TAKE THE THREE MARBLES FROM THE BAG. WHAT IS THE MIN NO.OF MARBLES HE WANT TO TAKE SUCH THAT ATLEAST ‘3’ MARBLES OF SAME COLOUR? 3M

4.IN A COUNTRY PEOPLE STOP GIVING BIRTH WHEN A BOY TAKEN BIRTH. AND THEY CONTINOUSLY GIVING BIRTH UNTIL THEY HAVE A BOY. NOW THE QUESTION IS WHAT IS THE PROROTION OF BOYS & GIRLS IN THAT COUNTRY? 7M

5. FIND THE FOUR +VE INTEGERS SUCH THAT

1. IF PRODOUCT KNOWS,THE 4 INT WOULD HAVE BEEN KNOWN.

2. IF SUM OF SQUARES KNOWS, THE 4 INT WOULD HAVE BEEN KNOWN.

3.IF SUM KNOWS, THE 4 INT WOULD NOT HAVE BEEN KNOWN . 7M

6.A MAJIC DRAGON OF WHICH IT HAS ‘3’HEADS & ‘3’ TAILS. YOU HAVE A MAJIC SWORD IN WHICH U CAN CUT ‘1’ OR ‘2’ HEADS OR TAILS AT A TIME. IF U CUT ONE TAIL TWO TAILS WII GROW. TF U CUT ‘2’ TAILS ONE HEAD GROWS. IF U CUT ONE HEAD ANOTHER HEAD GROWS. IF U CUT TWO HEADS THEN NOTHING GROWS . THEN WHAT IS THE MIN NO OF SWINGS DO U WANT TO KILL THE DRAGON? 7M

7. A PLATOON OF 50 SOLDIERS OF 50 MTS DOING A MARCHFAST. THE LAST SOLDIER CONTAIN A LETTER & HE WANT TO GIVE IT TO FIRST SOLDIER IN PLATOON. HE RAN TO HIM AND RETURN TO HIS ORIGINAL POSITION AFTER GIVING THE LETTER. THEN HE REALISES THAT THE PLATOON MOVES 50 MTS. NOW HOW MUCH DISTANCE HE RAN TOTALLY? 3M

8. SUPPOSE THERE ARE 1-9 CITIES. THE NAME OF EACH CITY IS DIVISIBLE BY 3(EX: 1-2, 12 IS DIVISIBLE BY 3). FIND THE NO OF WAYS TO REACH THE CITY 8. WITH BREAKUPS? 7M

OnMobile Placement Paper : S.J.C.E, Mysore

Round: 1

1) A clock takes seven seconds to strike 7, how long will it take to strike 10

2) There are seven sports person standing in a line each of them is represented by a unique number the numbers are such thet the product of the first three numbers is equal to the product of the middle three numbers is equal to the product of last three numbers find the middle number?

Round: 2

1) How many trailing zeros are there in 99!

2) ABCD x E = DCBA each of them are unique a is non zero find ABCD

3) Five webloggers - joshua Allen, meg Hourihan, jason Kottke, robert Scoble, and joel Spolsky - were competing for karma points on the major search engines: google, yahoo, altavista, <>lycos, and msn. karma was distributed on a five point scale. the most popular weblog received 5 points, and the least popular received 1 point. for each search engine, no two webloggers received the same number of points. overall scores were determined by adding up the individual scores from each search engine.

Allen got the highest number of karma points - 24. Kottke was consistent in his scores: He got the same karma points from 4 different search engines. Spolsky got 5 points from lycos, and 3 from msn.

No two webloggers got the same total score, and the final rankings were as follows: Allen, Hourihan, Kottke, Scoble, and Spolsky. how many karma points did Hourihan get from lycos?

Round: 3
There is an island filled with grass and trees and plants. The only inhabitants are 100 lions and 1 sheep.
The lions are special:
1) They are infinitely logical, smart, and completely aware of their surroundings.
2) They can survive by just eating grass (and there is an infinite amount of grass on the island).
3) They prefer of course to eat sheep.
4) Their only food options are grass or sheep.

Now, here,s the kicker:

5) If a lion eats a sheep he TURNS into a sheep (and could then be eaten by other lions).
6) A lion would rather eat grass all his life than be eaten by another lion (after he turned into a sheep).

Assumptions:
1) Assume that one lion is closest to the sheep and will get to it before all others. Assume that there is never an issue with who gets to the sheep first. The issue is whether the first lion will get eaten by other lions afterwards or not.

2) The sheep cannot get away from the lion if the lion decides to eat it.
3) Do not assume anything that hasn,t been stated above.

So now the question:

Will that one sheep get eaten or not and why?

2) Consider five holes in a line. One of them is occupied by a fox. Each night, the fox moves to a neighboring hole, either to the left or to the right. Each morning, you get to inspect a hole of your choice. What strategy would ensure that the fox is eventually caught?

Interview:

1) Draw a square. divide it into four identical squares. remove the bottom left hand square. now divide the resulting shape into four identical shapes.

2) This one is a classic that many of you have probably already heard, but all the more reason why it should definitely be included here. Four people are on this side of the bridge. The bridge will be destroyed by a bomb in 17 minutes. Everyone has to get across before that. Problem is that it,s dark and so you can,t cross the bridge without a flashlight, and they only have one flashlight. Plus the bridge is only big enough for two people to cross at once. The four people walk at different speeds: One fella is so fast it only takes him 1 minute to cross the bridge, another 2 minutes, a third 5 minutes, the last it takes 10 minutes to cross the bridge. When two people cross the bridge together (sharing the flashlight), they both walk at the slower person,s pace. can they all get across before the bridge blows up?

Person A: 1 minute

Person B: 2 minutes

Person C: 5 minutes

Person D: 10 minutes

OnMobile Placement Paper : Reva College, Bangalore

OnMobile placementpapers
1) What will be smallest number made by 0 or 1 and divisible by 450.
Ans: 11111111100

2) Find out the all pairs of two numbers such that their sum and multiplication (both of two digit) and after reversing the sum we got multiplication.
Ans: (9,9)

3) A school has 300 student. Every student read at least one of phy, maths and chem.
Number of students of read only physics is half of students read physics.
Number of students of read only Maths is 1/3 of students read Maths.
Number of students of read only Chemistry is 1/4 of students read chemistry.
And also
Number of Students of physics= Number of Students of maths= Number of Students of Chem.
Find out the Number of Student of physic.

OnMobile Placement Paper : St. Josephs School, Bangalore

ONMOBILE PAPER ON 25th NOVEMBER AT BANGALORE



Hi friends…

I wrote the onmobile test on 25th frm Bangalore.the test consisted of just 8 puzzles and 90 mins time.Some questions had negative marks.



1)1/3rd ppl in a village lie.nxt 1/3rd says truth and last 1/3rd are ‘normal’,ie, says sometimes truth and sometimes lie.A tourist met a man on the road on two consecutive days.what is the probability that he is ‘normal’?



2)In a group(A,B,C) there is a female and 2 males.The males say truth in the morning and lies in the afternoon.Female lie in the morning and says truth in the afternoons.One day a man asked the group what time it is.they replied like this



A:-B is female

B:-C is male

C:-A is female



Identify their correct gender…



3)A chessboard of 80 cm size .A 2cm diameter coin is tossed into the board.What is the probability that the coin fall completely on the white square?



4)100 monks are at one side of a river.They have to cross the river.In the river they saw 2 childern on a boat.So they thought of crossing the river in that boat.But the baot can carry one monk or two children at a time.What is the minimum no of shore to shore travel of the boat needed to take the all monks to other side?



5)There is a race track in which only 9 horses can race at a time.There came 81 horses and what is the min no of races needed to find the 4 champions?.Selection is not based on time but on position.



6)One man says truth only in one day in a week.

One day he said- I lie on Mondays and Tuesdays

Next day he said-today is either sat,sun or Thursday.

Next day he said-I lie Fridays and Wednesdays

In which day of the week the man says truth?



7)A professor startd from his home to college.He lookd at his watch and said,”the minute hand is exactly on a minute mark”.He then went college in his car.wen he stopd the car on the mid way,he saw the two hands were coinciding and the minute hand is not correctly over a minute mark.What was the time wen he startd frm home?



8)In a marchpast the distance b/w the 1st and last person is 50km.The first man ran to last man,touched him and returned to the last position while the marchpast was going on.Then he found dat the group moved 50 kms.what is the total distance the first man traveled?


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