Question

Give three pairs of prime numbers whose difference is 2. [Remark: Two prime numbers whose difference is 2 are called twin primes].

Answer 1

Solution:-
Three pairs of prime numbers whose difference is 2 are as follows.
1) 3 and 5
2) 11 and 13
3) 17 and 19

Answer 2

Three pairs of ‘prime numbers’ are (5, 7), (11, 13), (17, 19).

To find:

Three pairs of ‘prime numbers’ whose ‘difference’ is 2.

Solution:

Prime numbers are those numbers which can be ‘divided evenly only by 1’ and ‘by itself’. These type of numbers is called prime numbers. Hence, the prime numbers can be “2, 3, 5, 7, 11, 13, 17, 19, etc.”

Hence, the prime numbers with difference of 2 are:  

1. (5, 7)

2. (11, 13)

3. (17, 19)