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The greatest number by which both 24 and 9 are divisible is 3. Therefore, greatest common factor is 3.

Alternate method:

P.F. of 9 = 3x3

P.F. of 24 = 2x2x2x3

3 is the only Prime number which is the factor of both 24 and 9.

Therefore, GCF = 3.

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14y ago

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