Multiple choice

Find the wrong number in the following number series. 46 74 116 179 272.5 415.25

  1. 74

  2. 415.25

  3. 46

  4. 272.5

  5. 179
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern is: add 28, then 42, then 63, then 94.5, then 141.75. Each difference is multiplied by 1.5 to get the next difference (28×1.5=42, 42×1.5=63, 63×1.5=94.5, 94.5×1.5=141.75). Starting from 46: 46+28=74, 74+42=116, 116+63=179, 179+94.5=273.5, 273.5+141.75=415.25. The given 272.5 breaks the pattern - it should be 273.5.

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