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26 September, 17:00

List the common multiples of 9, 12, and 21.

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Answers (2)
  1. 26 September, 17:23
    0
    9=1,3,9

    12=1,2,3,4,612

    21=1,3,7,21

    1 and 3 are the common multiples
  2. 26 September, 17:28
    0
    3 is the common multiple of those numbers.
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