Which one of the following is a geometric progression?

3, 5, 9, 11, 15

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4, - 4, 4, - 4, 4

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12, 24, 36, 48

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6, 12, 24, 36

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Solution

The correct option is B $4, - 4, 4, - 4, 4$
$4, - 4, 4, - 4, 4$ is a geometric progression.
Here the common ratio is $- 1$ .
Option B is correct.

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