Multiple choice

Find the wrong term in the following number series- 12 9 6 18 4.5 22.5

  1. 6

  2. 18

  3. 4.5

  4. 9

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern is: ÷2, +0, ×3, +0, ÷2... but position 3 should be 9÷2=4.5 not 6. Checking the correct pattern from 12: 12÷2=6, 6+0=6, 6×3=18, 18÷4.5=4, 4×5=20... wait that doesn't work either. Let me try: 12-3=9, 9-3=6, 6×3=18, 18÷4=4.5, 4.5×5=22.5. This pattern works except position 4 should be 9÷2=4.5 not 6. So 9 at position 2 is wrong because it breaks the alternating pattern. Option D is correct.

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