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No, it is 3:

Factors of 12: 1, 2, 3, 4, 6, 12

Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30

Factors of 15: 1, 3, 5, 15

GCF (12, 24, 30, 15) = 3

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12y ago

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