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9 April, 22:06

What is the common ratio for the following geometric sequence? - 500, 100, - 20, 4, ...

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  1. 10 April, 01:23
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    The common ratio is - 1/5.

    Each number is the opposite (negative sign) and one fifth of the last one. This means to get the next term, you multiply by - 1/5, so that is your common ratio.
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