Exams › IBPS PO › Quantitative Aptitude

In the following number series, one number is wrong. Find the wrong number. 536, 500, 475, 460, 450, 446

1. 536
2. 475
3. 460
4. 450

Correct answer: 460

Solution

The series is meant to follow a pattern of subtracting perfect squares: 36, 25, 16, 9, 4. Starting from 536, we get 500, 475, 459, 450, 446. So 460 is incorrect; it should be 459.

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