Multiple choice

Which of the following number is wrong in the series. 3, 8, 1, 10, 1, 12

  1. 12

  2. 10

  3. 1

  4. 8
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Option C is correct. The series alternates between two sequences: 3, 8, 10, 12 (increasing by 2-5 pattern) and the '1' entries. The second '1' at position 5 breaks what should be an odd-even alternating pattern where odd positions should have one sequence and even positions another. Position 5 (odd) having '1' when it should continue the first sequence makes it the wrong number.

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