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Palindromic primes are two-digit prime numbers such that the number formed when the digits are reversed is also prime. What is the sum of all palindromic primes less than 50?

 

Answer with explanation please

 Oct 27, 2021
 #1
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The answer is 11 + 13 + 17 + 19 + 31 + 37 = 128.

 Oct 27, 2021
 #2
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which bit do you not understand?

 Oct 28, 2021

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