Mathematics for IGCSE & O level - Number (Section 1 - No. 5)
What are the prime factors of 42?
2, 3, 7
2, 3, 5
6, 7
1, 2, 3, 7
Explanation
The prime factors of 42 are the prime numbers that divide 42 without leaving a remainder. 42 = 2 x 3 x 7.
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