Mathematics for IGCSE & O level - Number (Section 1 - No. 20) | ExamPlay

Mathematics for IGCSE & O level - Number (Section 1 - No. 20)

What are the prime factors of 18?

2, 3

2, 3, 3

3, 6

2, 9

Explanation

18 = 2 * 3 * 3. The prime factors are 2 and 3 (with 3 appearing twice).

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