Multiple choice

Find the wrong number in the following number series- 4 6 12 28 90 315

  1. 6

  2. 4

  3. 12

  4. 28

  5. 315
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Test the pattern: 4 × 1 + 2 = 6, 6 × 2 + 0 = 12, 12 × 3 + 3 = 39 (not 28), 39 × 4 - 6 = 150 (not 90). The pattern breaks at 28. Another approach: 4 × 1 + 2 = 6, 6 × 2 = 12, 12 × 2 + 4 = 28, 28 × 3 + 6 = 90, 90 × 3 + 45 = 315. No consistent pattern fits all terms, but 28 is identified as wrong.

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