Multiple choice

Find out the wrong number in the following number series. 484 240 120 57 26.5 11.25 3.625

  1. 240

  2. 120

  3. 57

  4. 26.5

  5. 11.25
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The series follows: 484 ÷ 2 - 2 = 240, 240 ÷ 2 - 2 = 118, not 120. The pattern is divide by 2 and subtract 2. Checking: 240 ÷ 2 - 2 = 118 (given 120), 118 ÷ 2 - 2 = 57 (works), 57 ÷ 2 - 2 = 26.5 (works), 26.5 ÷ 2 - 2 = 11.25 (works). Therefore 120 is the wrong number.

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