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Direction (83-84): Given below are two number series. Series I is a missing series while series II is a wrong number series which follows pattern of series I only. 1. 11, P, 181, 350, 639, 1000 2. 242, 251, 255, 280, 329, 450, 619 Q84. If ‘y’ is the wrong number of the series II, then find the value of ‘2y+1’.
- 493
- 561
- 503
- 511
Correct answer: 503
Solution
The second series follows additions of consecutive prime squares, so the only term that breaks the pattern is 251. Therefore, y = 251 and 2y + 1 = 503.
Related IBPS PO Quantitative Aptitude questions
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