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18 December, 12:51

Find next two terms in sequence, identify pattern:

-7, 9, - 11, 13, - 15 ...

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  1. 18 December, 13:02
    0
    Answer: 17 and - 19

    Step-by-step explanation:

    -7, 9, - 11, 13, - 15 ...

    Next two terms of 1st difference are : 17 and - 19.

    Without the operation signs (eg: +, - ...) they are going up in two.

    It goes negative, then positive and so on.

    By using this, I am able to work out the next two terms.
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