Exams › IBPS PO › Quantitative Aptitude

What should come in place of the question mark '?' in the following number series? 0.25, 2.25, 6.25, 12.25, 20.25, ?

1. 42.25
2. 30.25
3. 24.25
4. 34.25

Correct answer: 30.25

Solution

The differences are 2, 4, 6, 8, so the next difference should be 10. Adding 10 to 20.25 gives 30.25. Therefore, 30.25 is the next term.

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