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How can you calculate the HCF of 18 and 42?

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Anonymous

∙ 13y ago
Updated: 11/3/2022

List the prime factors of each.

18 = 2 x 3 x 3,

42 = 2 x 3 x 7

Common factors are 2 and 3 so HCF = 6.

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Wiki User

∙ 13y ago
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