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26 May, 09:51

2. You are making necklaces for your friends. You have 72 blue beads and 42 red beads. Each friend will receive an identical necklace, and all beads must be used

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  1. 26 May, 10:15
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    To find out the number of necklaces that can be made from 72 and 42 beads, think of the Greatest Common Factor of both numbers

    Factors of 72

    1 * 72

    2 * 36

    3 * 24

    4 * 18

    6 * 12

    8 * 9

    Factors of 42

    1 * 42

    2 * 21

    3 * 14

    6 * 7

    The Greatest Common Factor is 6, so there are 6 necklaces can be made with equal number of beads
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