[511] 7, 26, 63, 124, 215, 342, ?

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Aptitude

TNPSC G4

10th CBSE Maths

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Q:21

7, 26, 63, 124, 215, 342, ?

391

421

481

511

Explanation:
The terms of the given series are (23 – 1), (33 – 1), (43 – 1), (53 – 1), (63 – 1), (73 – 1),…..So, missing term = (83 – 1) = (512 – 1) = 511.

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