Infosys

 

Below some example contain answer that are given in paper (I am not sure about them but hope they are correct)

 

 

Ok so what u rlogic or u tried for (method send it)

 

And who are coming on 4 sep for infy. Can u give me   any contact for him..

// friends here I give u some of the maths problem s of TCS and INFY paper  I tried but could not find right one ,, so even u find single one with correct answer so please mail me..   vishalashah@gmail.com, vr4indian@yahoo.com

 

 

 

If u find answer so also send how to solve it or what ever u try for that please

 

// some good example = 26.29.30.31.

5)  H starts running after T reaches 1/5th they must when H reach 1/6th if H wants win at what speed H should be run     note: one circle is there, you show this type of problem 

 

1. A software engineer starts from home at 3pm for evening walk. He walks speed of 4kmph on level ground and then at a speed of 3kmph on the uphill and then down the hill at a speed of 6kmph to the level ground and then at a speed of 4kmph to the home
If he reaches home at 9pm . What is the distance on the way 
ans 24 km

 

12:) . A bag contains certain number of files, Each file is numbered with one digit of 0 to 9. Suppose the person wants to get the number between 1 to 2000(or 7000 check). How many minimum no. of files should be present in the bag. 

3)How many bearers will an explorer need for a 6 day march if each man can carry the food stuff of one man for 4 days.

5) A contribution of Rs. 500 was raisedfrom 500 people. The fee was as follows: Men: Rs.3.00 each
Women: Rs. 2.00 eachChildern: 0.48 each If number of women is more than number of men, how many childern are there

2). If 5/2 artists make 5/2 paintings using 5/2 canvases in 5/2 days then how many artists r required to make 25 paintings using 25 canvases in 25 days?

 

1)A train and A Cyclist reaches a station every day at the same time. One day the Cyclist starts 20 minutes late from his house.On his way to station the train crosses him at 5 miles before station.The speed of cyclist is 12mph. Find the speed of the train. Ans:60mph 

 

) x**(1/3) – x**(1/9) = 60 note: ** is power of symbol find x? ans: 4**9. or 64*64*64 both ans are same.

 

1)mr. x (got paramvir chakra in 1971) died when his age was 1/59th the year of birth.what was his date of birth?

 ans-1947
 

 I try : let his dob is X

So   1971- X= X/59  (X/59 is what he had live )

1971*59= 60X

X= 1937.something

// where I got wrong

 

 

2:. A person needs 6 steps to cover a distance of one slab.if he increases his foot         length(step length) by 3 inches he needs only 5 steps to cover the slabs length.

 what is the length of the each slab.

(ans 31 inches).  (I get 90)
 

Take slab length = X so original step length = (X/6)

Now it increase by 3 inches so (X\6 + 3)

Now 5*(X\6+3) = X

// where I got wrong………

 

// what is method to solve the foll. Example ..

21.      Two people X & Y walk on the wall of a go down in opposite direction. They meet at a point on one side and then go ahead.  X after walking for some time, walks in opposite direction for 15 mtrs. Then again he turns back and walks in the original

direction. What distance did Y walk before they met again, if X walks 11 mtrs by the time Y walks 8 mtrs.

 

3)   Every station in N railroad issues every other station’s ticket. Some stations are added. Now they have to issue 46 more tickets. Give the No. of stations after and before added.

Ans: I think 23 and then   24 (1 station is added ) // 11 , 2 is othere answer
 

for 23 station they have toissued – 23* 22 = 506 ticket , now 1 is added 24 * 23 = 552 : 552-506=46

is there any other possible answer i tired this formula;  ((n+1)* n – n*(n-1) = 46)

(5 marks).

 

 

 

 

4:   .i participated in a race.1/5th of those who are before me are equal to 5/6th of those behind me. what were the total number of contestants in the race?

(3 Marks)

 

No.: people = X+1

People ahead me = Y

People behing me = X- Y

Now 1/5*Y = 5/6(X-Y)

Y= 5/6X  .. now I can not find perfect value of X, Y

 

How to solve this type of question :  // like always try for power
 

4.1. There are 6561 balls out of them 1 is heavy. Find the min. no. of times the balls have to be weighed for finding out the heavy ball.

Ans: 8   (3^8 = 6561 )

 

5)    x**(1/3) – x**(1/9) = 60 note: ** is power of symbol

find x?

 

6: . An escalator is descending at constant speed. A walks down and takes 50 steps to reach he bottom. B runs down and takes 90 steps in the same time as A takes 10 steps. How many steps are visible when the escalator is not operating?

Ans: 150 steps
 

7    . Fifty minutes ago if it was four times as many minutes past three o’clock, how many minutes is it to six o’clock?

Ans: Twenty six minutes.

 

 . A car is traveling at a uniform speed. The driver sees a milestone showing a 2-digit number. After traveling for an hour the driver sees another milestone with the same digits in reverse order. After another hour the driver sees another milestone containing the same two digits. What is the average speed of the driver.

Ans: 45kmph
 

9:  . A hotel has 10 storeys. Which floor is above the floor below the floor, below the floor above the floor, below the floor above the fifth.

Ans: The sixth floor.   // my answer is fifth  floor
 

10:  . Albert and Fernandes have two leg swimming race. Both start from opposite ends of the pool. On the first leg, the boys pass each other at 18 m from the deep end of the pool. During the second leg they pass at 10 m from the shallow end of the pool. Both go at constant speed but one of them is faster. Each boy rests for 4 seconds at the end of the first leg. What is the length of the pool?    Ans:???
 

 

11.   There are 3 societies A, B, C. A lent cars to B and C as many as they had already. After some time B gave as many tractors to A and C as many as they have.

After sometime c did the same thing. At the end of this transaction each one of them had 24. Find the cars each originally had.

  Ans: A had 39 cars, B had 21 cars & C had 12 cars

 //  I try but it is too long to solve .. any othe method 
 

 

12   .  Sam and Mala have a conversation.

  · Sam says I am certainly not over 40

  · Mala says I am 38 and you are at least 5 years older than me ·

     Now Sam says you are at least 39 All the statements by the two are false. How old are   they really?

 

Ans: Mala = 38 yrs, Sam = 41 yrs.
 

13 . A cube of size 10 units, painted black, is cut into 1000 pieces of 1 unit size. How many  of the cubes are painted (At least on one side)

  // I get 520 answer
 

10 * 10  + 10 * 10 + 4 * (8*10)
 

14. A child questions his father, “What is your father’s age”, to which the father answers

“He was aged X in year X2”. If the context is 20th Century, What is his Date of Birth?

 

15. A rich man wanted to distribute his collection of gold coins among his ten children

comprising of 5 sons and 5 daughters. He also wanted to give some coins to his car driver. He proceeds on the following basis. The first coin went to the car driver and then 1/5th of the remaining coins to his first son. He then gave another coin to the car driver and distributed 1/5th of the remaining coins to his second son. This procedure went on till all the five sons received their share. Once all the sons received their shares, he distributed the remaining coins equally among his daughters. Can u find how many gold coins the rich man had?

 

16 .A person meets a train at a railway station coming daily at a particular time . One day he is late by 25 minutes, and he meets the train 5 k.m. before the station. If his speed is 12 kmph, what is the speed of the train.

(ans. 60 kmph.)
 

 

 

 

 

 

 

17:. A gardener plants 100 meters towards east, next 100 meters towards north,next 100 meters towards west. 98 meters towards east, 96 meters towards north and 96

meters towards  west, 94 meters towards south. and 94 meters towards east and so on.

If a person walks between the trees what is the total distance travelled by him before he reaches the center

. Ans: ?????   // I tried to use AP series but I do not think answeris right one
 

18)   A Man is sitting in the last coach of train could not find a seat, so he starts walking to the front coach ,he walks for 5 min and reaches front coach. Not finding a seat he walks back to last coach and when he reaches there, train had completed 5 miles. what is the speed of the train.

Ans: ??????????????

 

19)   A contribution of Rs. 500 was raised from 500 people. The fee was as follows:

Men: Rs.3.00 each Women: Rs. 2.00 each Childern: 0.48 each If number of women is more than number of men, how many childern are there? (5 marks)

 

20:.  If 5/2 artists make 5/2 paintings using 5/2 canvases in 5/2 days then how many artists r required to make 25 paintings using 25 canvases in 25 days?

 

My answer  is  100:
 

21: . If a flight travels between India(IST) and Toronto(TST).There r 2 types of flights slow and fast.

 

IST     TST

SLOW – –

FAST   – –

 

TST     IST

SLOW  – –

FAST    – ?

 

These are the departure times and arrival times for slow and fast flights in IST and TST. then find the time in ?

ans. 22:40

 

22: . A boat M leaves shore A and at the same time boat B leaves shore B. They move across the river. They met at 500 yards away from A and after that they met 300 yards away from shore B without halting at shores. Find the distance between the shore A & B.

 

23: . Each man dances with 3 women, Each women dances with 3 men. Among each pair of men they have exactly two women in common.  Find the no. of men and women.

 

 

24: . There is a class of students where

one third were under 12

one half were under 13 and 6 were eleven yrs.

The number of students between 11 and 12 were equal that of between 12 and 13.

Find the figure!

 

25: : a watch tick 90 times in 95 seconds, another watch tick  315 times in 323 seconds. In 1 hour how many times they tick together (lcm, hcm,,)

 

26:. There is 66x33m rectangular area. Ram is 11/8 times faster than Krishna. Both of them started walking at opposite ends and they met at some point then, Ram said “See you in the other end” Then they continued walking. After some time Ram thought he will

 have tea so he turned back walked back 15 meters then he changed his mind again and continued walking . How much Krishna has traveled by the time they meet?

 

27:  . There are some chicken in poultry. They are fed with corn. One sack(bag) of corn will come for 9 days.  The farmer decides to sell some chicken and wanted to hold 12 chickens with him. He cuts the feed by 10% and sack of corn comes for 30 days. So initially how many chickens are there?

//  I tried in following way but answer 36 is not coming
Let take initial chicken = x and there feeding  is y

So  x* y =9

Now he has 12 chicken remain and y = 0.9y

12*0.9y = 30

Ans:36
 

28) A person goes to a bank and Quotes x Rs and y paise on a cheque. The cashier misreads it and gives y Rs and x paise. The  man comes out and donates 5 paise to a begger. Now, the man has exactly double the amount he has quoted on the cheque.

 

Ans: 31 Rs. and 63 paise.

 

29)   There were 50 players playing a game among themselves. each player is out of the game when lose 3 matches. what is the number of  matches should be plyed in order to get the winner.

 

30:.   There were some containers of quantity 1,3,4,5,6,12,15,22,24,38 liters. each was filled with some liquid except one. the liquids are milk, water and oil. quantity of each was like this

 

water = 2* milk

oil = 2* water

find out which container was empty and containers filled with milk and

oil.

 

 

31: A LONG DIVISION SUM                 —- 7 MARKS

                xx)xxxxxxxxx(xxxxxxx

                    xx

                   —

                     xxx

                      xx

                    —-

                      xxx

                       xx

                      —

                        xx

                        xx

                        —

                         xxx

                         xxx

                        —–

 

                in the complete solution there are four 5’s.

                Find the missing digits.

   

 

 

1.A Man sell 2 cows for Rs.210. He sells 1 cow for a profit of 10% and another cow for a loss of 10%. Totally he got profit of 5%. find cost of each cow.

 

 

                       

 

During a party 12 guests were there and each clinked his glasses with the 
other.How many clinks were heard totally?
 

Ans: 55
My is : 11+10+9+…1 = 11*12/2 = 66
 

8)A spider spins a web such that each day he spins exactly the same amount 
as it had spun until the previous day and finishes the web in 30 days.If two 
spiders work in the same manner how many days will they take?
 

 

10. A company’s director said during the board meeting: ” The company’s income from roads will be
sufficient to pay 6% of the entire stock issue, but since we are paying 7.5% interest on the preferred
stock of Rs.4, 000,000 we are able to pay only 5% of the common stock”. Find the value of the common stock.
 

 

3. Tanveer and kunal went down a descending escalator . the escalator was going down at a contant speed . kunal walked down the steps and had to cover 50 steps to reach the bottom.tanveer on the other hand ,ran down the steps of the escalator and hence had to take 75 steps to reach the bottom . actually , tanveer took 3 steps in the same time it took kunal to take 1 step . how many steps would be visible when the ecalator is stopped and not operating.?

 

(3). A software engineer starts from home at 3pm for evening walk. h e walkspeed of 4kmph on level ground and then at a speed of 3kmph on the uphill and then down the hill at a speed of 6kmph to the level ground and then at a speed of 4kmph to the home at 9pm what is the distence on one way?           4marks

  (4). a bag contains certain number of files. each file is numbered with one digit of 0 to 9. suppose the person want to get the number between 1 to 2000 (or 7000 check ) . how many min no. of files should be present in the bag.3marks                                

 

 

 

1. Problem based on sets. 100 ppl. 85 are married, 70 have phone, 75 have

 

house, 60 have car. find ppl having house, car, phone and r married?? easy set

 

problem. i am not sure abt figures but find total ppl who donot have these things

 

and subtract from 100 to get ppl having all these.

 

ans. 10

 

 

6. there r some steps. i come down 7 steps then see a man at bottom. then he

comes up and i go down at same speed(my speed). when 4 steps r remaining for

me i find tht man has reached the top. for my single step downwards he took 2

steps up. find total steps.

ans. 22 steps.

 

3. Twow men are goingalong a trackf rail in the opposite direction. One goods train crossed the first person in 20 sec.

     After 10 min   the train crossed the other person who is commingin opposite direction    in 18 sec .Afterthe train 

     haspassed, when thetwo persons will meet?

 

 

6)Two ships start from the opposite banks of river perpendicular to banks. Both are going at constant speed. One is faster than the other. They meet at 720 m from nearest bank. Then they go ahead upto the other end of banks and wait there for 10 minutes. Then they again comeback and meet 400m farfrom the other bank. find out what is the width of river. ans: 1720 check again