What are the greatest common factor of 21 30

asked Nov 10, 2019 189k views

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The GCF of 21 is 7 the GCF of 30 is 6. 7X3=21 5X6=30 there are no larger numbers that will go into either 21 or 30

Lubo Antonov answered Nov 12, 2019

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factors of 21: 3,7
factors of 30: 2, 3, 5, 6 10, 15

3 is the largest number that could be divided into the integers

GCF is
$\boxed{3}$

Vliu answered Nov 15, 2019

by Vliu

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