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21.

105 = 3 x 5 x 7

126 = 2 x 32 x 7

hcf = 3 x 7 = 21

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βˆ™ 13y ago
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βˆ™ 8y ago

The GCF of 105 and 126 is 21.

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βˆ™ 10y ago

The GCF is 21

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Q: What is the greatest common factor of 126 and 105?
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