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11 August, 10:49

Which answer describes the type of sequence?

1, 3, 5, 7, ...

arithmetic

neither arithmetic nor geometric

geometric

can someone show me how to do this?

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Answers (1)
  1. 11 August, 10:51
    0
    To be arithmetic, you have to have the same difference between all pairs of consecutive terms. You don't. You have differences of - 4, 8, - 16 ...

    To be geometric, you have to have the same ratio between all pairs of consecutive terms. You don't. You have ratios of - 3, - 5/3, - 7/5 ...

    To have a series that is both arithmetic and geometric, all the terms have to be equal.

    This series is neither arithmetic nor geometric.
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