The greatest common factor of 24 and 68 is 4.
4 x 6 = 24
4 x 17 = 68
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The GCF is 4.
You need at least two numbers to find a GCF. If that's 72 and 96, the GCF is 24.
The GCF of 24 and 12 is 12.
Method of prime factorization is a good method to find GCF.P.F. of 68 = 2x2x17P.F. of 56 = 2x2x2x7It is clear that 2x2 is the greatest common factor.Therefore, GCF of 68 and 56 = 4.
Since 17 is a factor of 68, it is automatically the GCF.