Find the sum of the first four terms of the geometric progression whose first term is…

MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series

Problem

Find the sum of the first four terms of the geometric progression whose first term is 77 and common ratio is −3-3. (a) 140140 (b) −140-140 (c) 280280 (d) −70-70

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