Question

) Which of the following is a pair of twin primes?
(a) 137, 139
(b) 139, 141
(c) 141, 143
(d) 147, 149​

Answer 1

Answer:

Any pair of prime numbers with a difference of two forms a twin prime number like (5,7), (3,5),(17,19) etc.

Among the given options only option (a) is a twin prime number pair, because 141, 143 and 147 are not even prime numbers so leave aside the question of them forming a twin prime pair.

Answer 2

Answer:

a) 137, 139 ARE TWIN PRIMES AS THEY ARE PRIME NUMBERS THAT DIFFER BY 2.