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28 January, 03:41

Finish this 3,9,4,12,7,21,16

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  1. 28 January, 04:03
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    The pattern is that every 2 numbers are a pair, the first being any selected number, and the second number next to is the number times 3.

    3 x 3 = 9

    4 x 3 = 12

    7 x 3 = 21

    Therefor we type 16 x 3 = 48

    48 is your next number.
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