Question

Two prime numbers are said to be ----- only if the difference is 2.

Answer 1

the answer is co-prime

Answer 2

We have to prove that if the difference between two prime numbers greater than two is another prime,the prime is 22. It can be proved in the following way.

1)Odd−odd=evenOdd−odd=even.

Therefore the difference will always even.

2)The only even prime number is 22.Therefore the difference will be 22 if the difference between primes is another prime.