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18 November, 13:49

What is least common multiple of 28,12,14,21?

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  1. 18 November, 15:26
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    Reducing the numbers to prime factors

    28 = 7 * 2 * 2

    12 = 3 * 2 * 2

    14 = 7 * 2

    21 = 7 * 3

    None of the numbers have a prime number in common with the others.

    So, the least common multiple would be 12
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