3. 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.
Write down separately the prime and composite numbers less than 20.
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Step-by-step explanation:
Complete step-by-step answer: In the question, we are said that both 13 and 31 prime numbers and both these numbers have the same digits 1 and 3 and thus, we have to find such pairs. ... The primes 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, 97.
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