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7 September, 19:28

Which of these sequences is a geometric sequence?

1, 2, 4, 7, 11, 16, 22, ...

2, 4, 8, 14, 22, 38, ...

3, 6, 9, 12, 15, 18, 21, ...

3, 9, 27, 81, 343, 729, ...

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  1. 7 September, 20:07
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    3, 9, 27, 81, 343, 729, ... is a geometric sequence because each term is obtained by multiplying 3 to the preceding term.
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