Multiple choice general knowledge math & puzzles

1 3 3 6 5 9 7 12 9

  1. 15

  2. 13

  3. 14

  4. 10
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This sequence has two interleaved patterns: odd positions (1,3,5,7,9) increase by 2 (1,3,5,7,9), while even positions (2,4,6,8,10) are multiples of 3 (3,6,9,12,15). The 10th term (even position) is 15.

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