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OpenStudy (anonymous):
Determine whether each of the following sequences are arithmetic, geometric or neither. If arithmetic, state the common difference. If geometric, state the common ratio. 4, 16, 36, 64, ...
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OpenStudy (anonymous):
\[\sum_{n=1}^{\infty} (2n)^2\]
OpenStudy (akashdeepdeb):
Neither. Because they do not have a common ratio nor do they have a common difference.
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