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10 March, 11:53

What is the greatest common factor for 21,24,27

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  1. 10 March, 14:29
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    So,

    To find the GCF, you have to factor all of the numbers.

    21 - - > 3 * 7

    24 - - > 2 * 2 * 2 * 3

    27 - - > 3 * 3 * 3

    Next, you find all the factors that they have in common.

    They all have at least one 3, so that means that 3 is the greatest common factor of 21, 24, and 27.
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