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7 November, 08:58

Bob has 3 children, the product of their age is 72, his youngest child called justice, what are their ages

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  1. 7 November, 12:32
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    I have encountered this question before. Since only the product of the ages is given, there are a lot of possible combinations.

    3 kids, has a youngest child - means that the 3 kids have different ages.

    I performed a prime factorization on 72.

    72 : 2 = 36

    36 : 2 = 18

    18 : 2 = 9

    9 : 3 = 3

    3 : 3 = 1

    1 x 2 x 2 x 2 x 3 x 3 = 72

    Possible age combination:

    1 x 8 x 9 = 72

    2 x 4 x 9 = 72

    3 x 4 x 6 = 72

    1 x 6 x 12 = 72

    1 x 4 x 18 = 72
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