Math Prime Numbers

posted by Elena

Grade 7 question:
I am a two-digit prime number
I am one less than a multiple of 10
If you add 30 to me you get another prime number

Who am I _________?

  1. bobpursley

    you can try 19, 29, 59, 79, 89. That will start you. On your own, figure out why I selected those.

  2. Elena

    Thank You !

  3. ryan dale

    they all end in 9 and are all multiples of a number:P ahahaah

  4. atubrk tbif

    umnfip fgbiyc nizkedq hrvpsx ipvkeonur apojvsx bchyned

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