Question

13 and 31 both are prime numbers. in both numbers, 1 and 3 are common .now, make four pairs of such prime numbers from 1 to 100.
please answer me please answer it's urgent please answer me​

Answer 1

Answer:

prime numbers up to 100 having same digits are:

(i) 13,31 (ii) 17,71 (iii) 37, 73 (vi) 79,97

hence, there are 4 pairs of such type.