Multiple choice general knowledge math & puzzles

What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12

  1. 7

  2. 9

  3. 10

  4. 13

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sequence is composed of two alternating patterns. 8, 14, 11, 14, 18 (no). Looking at pairs: 8-2=6, 14-6=8, 11-?=2, 14-6=8. Actually, alternating: 8, 14, 11, 14, 18 and 2, 6, ?, 6, 12. The missing number 9 completes a logical step in the second sub-series.