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31 July, 12:39

What is the common ratio for the sequence 5, - 10, 20, - 40, ... ?

-2

-1/2

1/2

2

+2
Answers (2)
  1. 31 July, 12:59
    0
    the common ratio is - 2
  2. 31 July, 13:08
    0
    Common ratio is - 2

    5 x (-2) = - 10

    -10 x (-2) = 20

    20 x (-2) = - 40
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