Exams › IBPS PO › Quantitative Aptitude

Find the missing number in the series: 9, 16, 26, ?, 69.

1. 35
2. 38
3. 40
4. 43

Correct answer: 43

Solution

The differences are 7, 10, ?, ?. A suitable pattern is +3, +4, +5 on the differences: 7, 10, 14, 19. So the missing term is 26 + 17 = 43.

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