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5th Grade MATH!

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in Which set is 2/3 of the numbers composite?
a. 21,29,15,9,27,30




  • 5th Grade MATH! -

    each set ha 6 members, so we want sets with 4 composite numbers.

    Small primes are 2,3,5,7,11,13,17,19,23,29,31,37

    should be able to tell which are not primes.

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