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The factors of 21 are:

1, 3, 7, 21

The factors of 35 are:

1, 5, 7, 35

The common factors are:

1, 7

The Greatest Common Factor:

GCF = 7

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Wiki User

9y ago

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More answers

21 and 35 are both in the 7 timetable, so 7 is a common factor.
Because 7 can divide into both 21 and 35 evenly.

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Wiki User

13y ago
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7 is the greatest common factor of 21 and 35.

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Wiki User

14y ago
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Yes.

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Wiki User

9y ago
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True

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Wiki User

13y ago
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Yes

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Kairoy Thomas

Lvl 2
2y ago
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Q: Is 7 the greatest common factor of 21 and 35 and why?
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