What is the greatest common factor of 21 40

2 answers:

8 0

The GCF is 1, their factors are:
21:1, 3, 7, 21
40: 1, 2, 5, 8, 10, 20, 40
The only one they have in common is 1, so 1 is the greatest one.

faust18 [17]3 years ago

7 0

The greatest common factor of 21 and 40 is 1

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