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16 May, 22:02

What is the sum of the first 7 terms of the series - 8+16-32+64 - ... ?

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  1. 16 May, 22:22
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    The 7th term is + 256 The sequence comes in a times - 2 pattern. The computations are as follows:

    -8 (x - 2) = + 16 (X - 2) = - 32 (-2) = + 64

    Therefore continuing the sequence the 7th number/term is ...

    +64 (X - 2) = - 128 (X - 2) = + 256 (X - 2) ...
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