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1 July, 06:07

What is the greatest common factor for 21 and 40?

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  1. 1 July, 06:59
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    To get the Greates Common Factor (GCF) of 21 and 40 we need to factor each value first and then we choose all the copies of factors and multiply them:

    21: 3 7 40: 222 5 GCF: The Greates Common Factor (GCF) is: 1
  2. 1 July, 07:24
    0
    The only common factor is 1. So that's the greatest.
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