What is the greatest common factor of 15 24 6 and 12?

Answer 1

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

Answer 2

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

Factors of 15: 1, 3, 5, 15

Factors of 20: 1, 2, 4, 5, 10, 20

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

GCF (12, 15, 20, 30) = 1

Answer 3

The GCF is 3.

Answer 4

The GCF is 1.

Answer 5

GCF(12, 15, 20, 30) = 1.