Multiple choice

Directions: In the following number series, one number is wrong. Find out the wrong number. 30, 45, 57.5, 101.25, 151.875, 227.8125

  1. 30

  2. 57.5

  3. 45

  4. 101.25

  5. 151.875
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B Correct answer
AI explanation

The series follows an alternating multiplication pattern of 1.5 and a quarter of the previous number. 45 times 1.5 is 67.5, not 57.5, making it the wrong number; 67.5 plus a quarter of 45 is 78.75, which aligns with the multiplication of 1.5 by 101.25.

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