Q: HCF of 91 77 28

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7

7 is the highest common factor of 21, 77 and 91.

28 = 4 x 777 = 11 x 7 91 = 13 x 7 Great common factor = 4 x 11 x 13 x 7 = 44 x 91 = 4004

The GCF is 7.

The GCF is 7.

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The HCF of 28 77 and 91 is 7, since 7 goes into all the numbers and all the numbers above it dont.

The GCF is 7.

7

7 is the highest common factor of 21, 77 and 91.

28 = 4 x 777 = 11 x 7 91 = 13 x 7 Great common factor = 4 x 11 x 13 x 7 = 44 x 91 = 4004

The GCF is 7.

The GCF is 7.

The GCF is 7.

The GCF is 7.

The factors of 28 are: 1, 2, 4, 7, 14, 28 The factors of 77 are: 1, 7, 11, 77 The factors of 91 are: 1, 7, 13, 91

7 is the Greatest Common Factor (GCF) Factored into their prime factors: 28 = 2 x 2 x 7 77 = 7 x 11 91 = 7 x 13 The only factor they have in common (other than 1) is 7

The GCF is 7.