What number comes next in the series 3, 30, 8, 27, 13, 24, ...?

Answer and explanation

Correct answer: C. 18

  1. Step 1: Two patterns alternate. The odd positions rise by 5 (3, 8, 13) so the next odd-position term is 18.
Answer
18.
Why not the others: 21, 13 and 23 don't fit.

Practise more Series, ordering and arithmetic reasoning.

Free questions with an explanation for every one, and full timed Examen Admisión UNMSM (Peru) mock tests.