The sequence is formed by mixing two different progressions

MATHEMATICS · Subjective · A Level · Mathematics · Sequences and series · Sequences and series

Problem

The sequence 3, 6, 6, 12, 9, 24,…3,\,6,\,6,\,12,\,9,\,24,\ldots is formed by mixing two different progressions. Identify the progression followed by (i) the terms in odd positions and (ii) the terms in even positions. State their common difference or common ratio, as applicable.

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