Infosys Placement Paper Aptitude - Puzzle St Michaels Academy,Chennai-10 Sep 2006

Posted by FreshersWorld

7 Jan, 2012

NFOSYS SAMPLE PAPER ON 10 th SEPTEMBER AT CHENNAI

I am haridas from k.l.n.college of engg.... i think everyone may find this usefull...

1)x^(1/3) - x^(1/9)=60

Ans: put x=2^18

After this.... questions are not in order....

2) cubes problem i.e is from previous papers the surface of the cube is painted with red colour. By six straight cuts 27 cubes are formed then a) how many cubes are there with 0 side red colour b) how many cubes are there with 1 side red colour c) how many cubes are there with 2 side red colour d) how many cubes are there with 3 side red colour

3)edward was the youngest this puzzle was pretty easy and i feel each one of u can solve it. it goes something like john is

older than dave but younger than edward and goes on ( sorry folks don remember the exact Qn but its pretty easy) there were

11 names and the Qn was to find the youngest of them.

ans edward is the youngest

4)Two couples are going fo a purchase , the man buys a suit + hat =15 ,and girl buys her hat same as her husband's suit and

the rest for her dress... sort of like this only could not remember...

5)This question i din solve...i remember the question partially it was like... there were totallly 100men in that 70 were

married,75 having car,80 having own house ,85 having dog... from this find out the number of men having all the four..

somewhat like this..

6)100 knockout matches find out how many matches will it take to decide the winner...,

Ans: 99

7)A,B,C,D,E were 5 people.A and B were talking in english whn D joined and they changed to spanish whichi is the only common

language between them....similarly some knew portugese,french,italian.the was easy n is also repeated qs .(8 marks) conditions:

spanish is the most commonly spoken language.

3 of them speak portuguese.

a and c can talk in spanish but when b arrives they start talking in english

a and b speak in italian

out of them one person speaks 1 language,1 person speaks 2 languages,1 person speaks 3 languages,1 person speaks 4

languages,1 person speaks 5 languages. (could not remember entire question.......but it was like this only and you have to give answers of 4 following questions

asked)

8)A man starts from XYZ city and drives a constant speed. After some time he sees a milestone with two digits written on it.

after he drives for an hour, he sees another milestone with the same digits, but in reversed order. After another hour of

journey, he sees another milestone with original digits but with a zero between them.

What was the speed of his car if milestones show kilometers?

Ans:45 k.m/hr?..number is 16,61,106

9) A five digit no whose third digit is one greater than the sum of the first two digits and the third digit is double the

fourth digit and fourth digit is double the fifth digit and second digit is greater than first digit by 5. and if we multiply

fourth and fifth digit we get third digit.

SOL) 16842

10)There was a cycle race going on. 1/5th of the those in front of a person and 5/6th of those behind him gives the total

number of participants. How many people took part in the race? (3 marks) Ans : 31

Approach:

Let the total number of participants be X

So, [(x-1)/5 + 5(x-1)/6] = X

Ans:31

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NFOSYS SAMPLE PAPER ON 10 th SEPTEMBER AT CHENNAI

I am haridas from k.l.n.college of engg.... i think everyone may find this usefull...

1)x^(1/3) - x^(1/9)=60

Ans:

put x=2^18

After this.... questions are not in order....

2) cubes problem i.e is from previous papers

the surface of the cube is painted with red colour. By six straight cuts 27 cubes are formed then

a) how many cubes are there with 0 side red colour

b) how many cubes are there with 1 side red colour

c) how many cubes are there with 2 side red colour

d) how many cubes are there with 3 side red colour

SOL)

0 faces coloured-1

1 faces coloured-6

2 faces coloured-12

3 faces coloured-8

3)edward was the youngest this puzzle was pretty easy and i feel each one of u can solve it. it goes something like john is

older than dave but younger than edward and goes on ( sorry folks don remember the exact Qn but its pretty easy) there were

11 names and the Qn was to find the youngest of them.

ans edward is the youngest

4)Two couples are going fo a purchase , the man buys a suit + hat =15 ,and girl buys her hat same as her husband's suit and

the rest for her dress... sort of like this only could not remember...

5)This question i din solve...i remember the question partially it was like... there were totallly 100men in that 70 were

married,75 having car,80 having own house ,85 having dog... from this find out the number of men having all the four..

somewhat like this..

6)100 knockout matches find out how many matches will it take to decide the winner...,

Ans: 99

7)A,B,C,D,E were 5 people.A and B were talking in english whn D joined and they changed to spanish whichi is the only common

language between them....similarly some knew portugese,french,italian.the was easy n is also repeated qs .(8 marks)

conditions:

spanish is the most commonly spoken language.

3 of them speak portuguese.

a and c can talk in spanish but when b arrives they start talking in english

a and b speak in italian

out of them one person speaks 1 language,1 person speaks 2 languages,1 person speaks 3 languages,1 person speaks 4

languages,1 person speaks 5 languages.

(could not remember entire question.......but it was like this only and you have to give answers of 4 following questions

asked)

8)A man starts from XYZ city and drives a constant speed. After some time he sees a milestone with two digits written on it.

after he drives for an hour, he sees another milestone with the same digits, but in reversed order. After another hour of

journey, he sees another milestone with original digits but with a zero between them.

What was the speed of his car if milestones show kilometers?

Ans:45 k.m/hr?..number is 16,61,106

9) A five digit no whose third digit is one greater than the sum of the first two digits and the third digit is double the

fourth digit and fourth digit is double the fifth digit and second digit is greater than first digit by 5. and if we multiply

fourth and fifth digit we get third digit.

SOL) 16842

10)There was a cycle race going on. 1/5th of the those in front of a person and 5/6th of those behind him gives the total

number of participants. How many people took part in the race? (3 marks)

Ans : 31

Approach:

Let the total number of participants be X

So, [(x-1)/5 + 5(x-1)/6] = X

Ans:31