Identify the series that converges.

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

Problem

Identify the series that converges. (a) 7+7+7+⋯7+7+7+\cdots (b) 5+2.5+1.25+⋯5+2.5+1.25+\cdots (c) 8−12+18−⋯8-12+18-\cdots (d) 10+15+22.5+⋯10+15+22.5+\cdots

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