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Mathematics 14 Online
OpenStudy (anonymous):

? 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, …

OpenStudy (mathstudent55):

To find out, do this for each sequence. Start with the second number, and divide each number by the previous number. If all divisions give you the same result, you have a constant ratio, and it's a geometric sequence.

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