Multiple choice general knowledge math & puzzles

1, 8, 5, 12, 9, 16, 13, 20, x

  1. 27

  2. 47

  3. 37

  4. 17
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The sequence alternates between adding 7 and subtracting 3: 1+7=8, 8-3=5, 5+7=12, 12-3=9, 9+7=16, 16-3=13, 13+7=20. The next step is 20-3 = 17.

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