1, 2, 4, 8
1, 2, 7, 14
1, 2, 4, 8
1, 2, 7, 14
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Because 7 is a prime number, its only factors are 1 and 7. 7 is not a factor of 4 or 8, so 1 must be the only factor common to all four numbers. To work it out in detail: Factors of 4: 1 2 4 Factors of 7: 1 7 Factors of 8: 1 2 4 8 Factors of 14: 1 2 7 14 The GCF of 4, 7, 8, and 14 is 1
Factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42
The factors of 28 are: 1, 2, 4, 7, 14, 28 The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56
The factors of 56 are 1, 2, 4, 7, 8, 14, 28 and 56.
The factors of 98 are: 1, 2, 7, 14, 49, 98The factors of 112 are: 1, 2, 4, 7, 8, 14, 16, 28, 56, 112