Question

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

Answer:

123

433

Step-by-step explanation:

122255558878788888

Answer 2

Answer:

By the Sieve of Eratosthenes method find the prime numbers between 1 and 100. We find that these are

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97.

Out of these, a pair of prime numbers having same digits are 13, 31; 17, 71; 37, 73, 79, 97.