Latest TCS Aptitude Question SOLUTION: N is an integer and N>2,at most how inters among N+2,N+3,N+4,N+5,N+6,N+7 are prime integers?

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N is an integer and N>2,at most how inters among N+2,N+3,N+4,N+5,N+6,N+7 are prime integers?

Asked In TCS vignesh (11 years ago)

Solved Divya Read Solution (16)

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Read Solution (16) :

Divya  (11 years ago)

substitute n with 3,4,5...(n>2),for instance if n is substituted by 3 then the series would be 5,6,7,8,9 among these 2 are prime numbers. check it for other numbers also we get 2

Is this solution Helpfull? Yes (40) | No (5)  

HARSH  (11 years ago)

Answer is 3......bcz 2 is only even number that is prime...so if we assume N is odd number then we must add even number to make it prime ( odd + even=odd)...so N+2,N+4,N+6 may be primes.....and if we assume N is even number then we must add odd number to make it prime (even+odd=odd)...so N+3,N+5,N+7 may be primes.

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Danish Shaikh   (11 years ago)

Put n=105 and get 3 as Ans

Is this solution Helpfull? Yes (5) | No (15)  

Aman Agarwal  (11 years ago)

The answer is 2 only fr sure.
@Danish if we use 105 we get 107 and 109 only as the prime numbers. I think you thought 111 also as the prime number but its divisible by 3.

Is this solution Helpfull? Yes (3) | No   

mounika  (11 years ago)

just consider n=3,4,5..... we will get 2 numbers will be prime numbers among those.

Is this solution Helpfull? Yes (2) | No (1)  

chandan kumar  (11 years ago)

by substituting any integer >2 u will find that there is only two prime nos that exist.so ans. is 2.

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Ritika M  (11 years ago)

I think its 2

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asha  (11 years ago)

only two prime numbers. check with any number >2.

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Deepa  (11 years ago)

we will get 2 numbers as prime...

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paramesh satya  (11 years ago)

any values >3 only two prime numbers are out comes...so answer is 2

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muttareddy veera mani devi  (11 years ago)

only 2 are prime no's

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Deblina Manna  (11 years ago)

for any value of n greater than 2,check it.the answer will be 2.

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ariz  (11 years ago)

@Danish Shaikh:
its 2
coz if we take n=105
we will get only 2 prime nos.
ie. 107 and 109

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vivek  (11 years ago)

2 will be answer you can check it by taking N as odd and even number

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sravani kollipara  (11 years ago)

2 primes for all values of n=3,4,5...

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Rohit Katariya  (11 years ago)

4 in case if n=0
2,3,5,7
Rest cases will have max 3.

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