Question

The numbers 13 and 31 are prime numbers. Both these numbers have same digits 1 and 3. Find such pairs of prime numbers up to 100.

Answer 1

i) 17 and 71, here both 17 and 71 are prime numbers.
ii) 37 and 73, here both 37 and 73 are prime numbers.
iii) 79 and 97, here both 79 and 97 are prime numbers.

Note: In these type of questions we can only apply hit and trial method.