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4 June, 20:34

What is the sum of all of the two-digit primes that are greater than 12 but less than 99 and are still prime when their two digits are interchanged?

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  1. 4 June, 22:29
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    418

    Step-by-step explanation:

    The prime numbers are 13, 17, 31, 37, 71, 73, 79, 97

    Sum = 13+17+31+37+71+73+79+97 = 418
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