What number comes next in the series 7, 27, 10, 21, 13, 15, ...?
Answer and explanation
Correct answer: C. 16
- Step 1: Two patterns alternate. The odd positions rise by 3 (7, 10, 13) so the next odd-position term is 16.
Answer
16.
Why not the others: 9, 13 and 19 don't fit.
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