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Mathematics 15 Online
OpenStudy (anonymous):

Find the nth term of the geometric sequence whose first term is 3 and fourth term is 24.

OpenStudy (zehanz):

Geometric series: \(a, ar, ar^2, ar^3, ..., ar^n,...\) Here, a = 3. The fourth term is equal to 3r³=24, so r³=24/3=8. Now you only have to find r such that r³=8...

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