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Q: What is the GCF of 11 and 68 using prime factorization?

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11 is already prime and since 20 is not a multiple of 11, the GCF is 1.

2 x 7 = 14 2 x 11 = 22 The GCF is 2.

11 is a prime number.

3 x 11 = 333 x 5 x 5 = 75The GCF is 3.

3 x 5 = 155 x 11 = 55Select the common factor.The GCF is 5.

3 x 3 x 11 = 99 3 x 5 x 11 = 165 3 x 11 = 33, the GCF

3 x 3 x 11 = 99 3 x 5 x 11 = 165 3 x 11 = 33, the GCF

GCF of 121 and 132 is 11.Method of prime factorization:Prime factorization of 121 = 11x11Prime factorization of 132 = 2x2x3x11Only 11 is common in P.F. of both numbers.So greatest common factor is 11.

3 x 3 x 11 = 99 7 x 11 = 77 The GCF is 11.

3 x 3 x 11 = 99

It's not really necessary since 11 is a factor of 22 and automatically the GCF, but if you insist...112 x 11Select the common factor.The GCF is 11.

That appears to be a little backwards. It makes more sense to find the GCF of 56 and 154 using prime factorization. 2 x 2 x 2 x 7 = 56 2 x 7 x 11 = 154 2 x 7 = 14, the GCF

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