P is a prime number and (P2 + 3) is also a prime number . The no. of numbers that P can assume is:

Only, one value P can be assumed, which is at 2 at P = 2 P2 + 3 = 7 which is also prime Again at P = 3, 5, 7, 11 ....... P2 + 3 = an even number which can not be prime

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This question belongs to Arithmetic Ability Number System

Number System

?

P is a prime number and (P² + 3) is also a prime number . The no. of numbers that P can assume is:

A) 3 B) 2 C) 1 D) Can't determined

Answer & Solution

Correct Answer: Option C

Only, one value P can be assumed, which is at 2 at P = 2
P² + 3 = 7 which is also prime
Again at P = 3, 5, 7, 11 .......
P² + 3 = an even number which can not be prime

Question posted by Examveda

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Dhaval Goswami 6 years ago

answer is c.1

Anik Du 6 years ago

Solution shows that answer is 2 But Question here is 3
Confusing??
Please has anyone to solve.....

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