Question

common factor of 12 and 18

Answer 1

$12 = 2 \times 2 \times 3 \\ \\ 18 = 2 \times 3 \times 3$

Therefore, Common factor is 2 and 3

Answer 2

Factors of 12 are 1, 2, 3, 4, 6 and 12 ... ... because 2 × 6 = 12, or 4 × 3 = 12, or 1 × 12 = 12.

The factors of 18 are 1, 2, 3, 6, 9, 18. The factors of 27 are 1, 3, 9, 27. The common factors of 18 and 27 are 1, 3 and 9. The greatest common factor of 18 and 27 is 9.

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