Question

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

Answer 1

Finding the pairs of prime numbers:

Prime Numbers:The numbers which have only two factors $1$ and the number itself are called Prime Numbers.

Therefore, the pairs of prime numbers having the same digits are

$17$ and $71$,

$37$ and $73$,

$79$ and $97$.