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Posted by victoria on Tuesday, March 11, 2014 at 2:00am.

5 x 3^n a)15,30,45,60 b)5,15,45,135 c)0,15,45,135 d)15,45,135,405

3^n: 1,3,9,27 so, which is 5 times that? Hint: only one sequence starts with 5

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