A single number is inserted between 7 and 28 so that the three numbers are in…

MATHEMATICS · Multi-part · CBSE · Mathematics · Sequences and Series · Sequences and Series

Problem

A single number is inserted between 7 and 28 so that the three numbers are in geometric progression. (i) Find the inserted number. (ii) Verify that the ratio of the first term to the inserted number is equal to the ratio of the inserted number to the last term, and state this common ratio.

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