Infosys Placement Paper 4th July 2005, Chennai Submitted by Ejish

1. There is a circle race going on. One of them says,”1/3 of those in front of me and ¾  of those behind me, give the total number of children in the race”. Then the number of children took part in the race?

 

Ans : 12

 

2. In an Isalnd the natives lie and visitors speak truth. A man wants to whether a salesman beside him in a bar is a native or visitor. He asked him to ask a woman beside him whether she is a native or visitor. He replied that she says “she is a visitor”. Whether the salesman is a native or visitor?

 

Ans : Visitor ( not sure )

 

3.A man fixed an appointment to meet Mr.X, X asked him to meet two days after the day before the after tomorrow. Today is Friday. Whats the appointed day.

 

Ans: Tuesday.

 

4. A jewel problem, with some conditions and it is quite easy to solve.

 

5.A man said he spent 1/6 of his as a child, 1/12 as salesman in a liquor shop, 1/7 and 5 years as a politician and a good husband respectively. At that time Jim was born. Jim was elected as Alderman four years back.when he was half of his age. What is his age.

 

Ans: 86

 

6.Jack,Droug and Ann, 3 children had a race when returning from school. Ann takes 28 steps when Droug takes 24 steps, meantime Jack takes 21 steps. Jack explained that his 6 steps equals Droug’s 7 steps and Ann’s 8 steps. Who won the race?

 

Ans: Droug

 

7. Every day a cyclist meets a car at the station.The road is straight and both are travelling in the same direction. The cyclist travels with a speed of 12 Kmph.

    One day the cyclist comes late by 20 min. and meets the car 5km before the

Station. What is the speed of the car?

 

Ans: 60 kmph

 

8. A problem of persons and profession. Quite easy one.

 

9.A lady goes for shopping. She bought some shoestrings. 4 times the number of shoestrings, she bought pins and 8 times, handkerchiefs. She paid each item with their count as each piece’s cost. She totally spent Rs. 3.24. How many handkerchiefs did she buy?

Ans : 16

10. Complete the series :

 

a)      3,6,13,26,33,66,____

b)      364,361,19,16,4,1,___

 

Ans :  a) 73

           b) 1 or -1

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Showing Answers 1 - 8 of 8 Answers

munish

  • Aug 23rd, 2005
 

Answer :  
1. There is a circle race going on. One of them says,”1/3 of those in front of me and ? of those behind me, give the total number of children in the race”. Then the number of children took part in the race? 
 
 
 
Ans : 12 
 
I know the answer is 12 but i dont know how to solve it if any one can send me the approach to fix it i will be very thankful. 

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sonam

  • Aug 26th, 2005
 

answer of 5th question is wrong. 
the answer will be 84. 
explanation is suppose his age is x then 
equation will be=x/6+x/12+x/7+5+x/2+4=x 
will give 84.

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sonam maru

  • Aug 26th, 2005
 

someone has asked about 1st question(circle race). 
this is my clarification= 
ans will be 12. 
equation will be 
(1/3+3/4)-1=1 
will give the ans 12. 
becoz of circle a child has counted twice. 
 

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rajkarthick

  • Oct 7th, 2005
 

A man said he spent 1/6 of his as a child, 1/12 as salesman in a liquor shop, 1/7 and 5 years as a politician and a good husband respectively. At that time Jim was born. Jim was elected as Alderman four years back.when he was half of his age. What is his age.

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bala

  • Dec 31st, 2005
 

Hi All,

   For the puzzle on circle race (qn 1), I think the answer is 13. Here is my soln..

let the no. of children be x.

then 1/3 (x-1) + 3/4 (x-1) = x on solving we get x = 13.

Since we cannot count the child who is giving the details in qn I have taken x-1 as no. of children behind him..... and x-1 as no of children in front of him which has to ben equal since it is a circle. Please let me know the flaw in this logic.

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vidhya

  • Jun 16th, 2006
 

i think the answer is 13

1/3*(x-1)+3/4*(x-1)=x

x/3-1/3+3x/4-3/4=x

13x/12-13/12=x

x/12=13/12

which gives x=13

reply me if u have got 12 through some other steps

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jeevan teja

  • Jun 20th, 2006
 

hi,

I just want to know the question of cyclist and car . how is the speed of the car 60 kmph.

plz give reply

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Anish Matania

  • Jul 25th, 2006
 

the answer is 13

bcoz here x is total and 1/3 of x-1 is acc to the statement

1/3(x-1)+3/4(x-1)=x

solving this the answer will be 13

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