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7 February, 07:29

Which of these is a geometric sequence?

A. 2, 3, 5, 9, 17, ...

B. 2, 4, 6, 8, 10, ...

C. 3, 15, 75, 375, 1875, ...

D. 1/3, 2, 3, 4, ...

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Answers (2)
  1. 7 February, 07:44
    0
    C is a geometric sequence. the terms share a ratio of 5
  2. 7 February, 07:45
    0
    Geometric sequence has a common ratio:

    Option C.

    Because: 15/3 = 75/15 = 375/75 = 1875/375 = 5
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