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4 September, 08:56

What is the next number after 3 - 6 12 4 20

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  1. 4 September, 09:03
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    The sequence is alternatingly decreasing and increasing.

    3 - 9 = - 6

    -6 + 18 = 12

    12 - 8 = 4

    4 + 16 = 20

    Therefore, next term will be:

    20 - 7 = 13
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