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28 March, 11:16

1, 4, 13, 40, 121 what is the next number in the pattern

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  1. 28 March, 11:34
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    Add powers of 3.

    1 + 3 = 4

    4 + 9 = 13 = 4 + 3^2

    13 + 27 = 40 = 13 + 3^3

    40 + 81 = 121 = 40 + 3^4

    Now you need to add 3^5 to 121.

    121 + 3^5 = 121 + 243 = 364
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