Question

the digits of the prime number 13 can be reversed to get another prime number 31. Finding any such pairs exist up to 100.​

Answer 1

Answer:

17and71

37and73

79and97

Answer 2

17 and 71 and 37 and 73 and 79 and 97 are such pairs where digits of prime number are reversed to get another prime number

Solution:

A prime number is a whole number greater than 1 whose only factors are 1 and itself.

Given that we have to find prime numbers upto 100 where the digits of prime number are reversed to get another prime number

Example pair given is : 13 and 31

Here both 13 and 31 are prime numbers. Both 13 and 31 are divisible by itself and 1 only

Also, on reversing the digits of 13, we get 31 which is also a prime number

Similarly,

37 and 73 = Both are prime numbers and on reversing 37 we get 73 which is also a prime number

79 and 97 = Both are prime numbers and on reversing 79 we get 97 which is also a prime number

Hence totally 4 such pairs exist upto 100

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