Multiple choice

In the following number series, only one number is wrong. Find out the wrong number. 25, 75, 225, 685, 2025

  1. 15

  2. 75

  3. 225

  4. 685

  5. 2025
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D Correct answer
Explanation

The pattern is: 25 * 3 = 75, 75 * 3 = 225, 225 * 3 = 675, 675 * 3 = 2025. The number 685 is incorrect; it should be 675.

AI explanation

The series follows a pattern where each term is multiplied by 3 to get the next term, as 25 multiplied by 3 equals 75, and 75 multiplied by 3 equals 225. Following this logic, the fourth term should be 225 multiplied by 3, which is 675. Since 685 appears in the place of 675, it is the wrong number.

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