2nd grade

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The sum of my ones digit and tens digit is 10. My tens digit is les than my ones digit and both my digits are prime. i am a prime number. what number am i?

  • Math riddle -

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  • 2nd grade -

    Lets say the number is AB

    so A+B=10

    we also know that A<B

    and both A and B are prime

    so possibilities for A and B are

    1,2,3,5,7

    if A<B then A can only be 1,2,3,or 5

    the only pairs such that A+B=10

    are 55, 37

    of these two only 37 is a prime number

    But check the logic!

  • 2nd grade -

    1

  • 2nd grade -

    gummy bear yaaaaa

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