Multiple choice

In each of the following number series a wrong number is given. Find out the wrong number. 4 11 10 48 173 888

  1. 4

  2. 11

  3. 10

  4. 173

  5. 888
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pattern: ×1 +7, ×2 +8, ×3 +9, ×4 +10. Starting from 4: 4×1+7 = 11, 11×2+8 = 30 (should be, but 10 is shown), 30×3+9 = 99 (should be, but 48 is shown), 99×4+10 = 406 (should be, but 173 is shown). The pattern breaks at 10, making it the first wrong number in the sequence.

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