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What will come at the place of question mark 7 26...

This question belongs to Competitive Reasoning Number Series Completion
Number Series Completion
?

What will come at the place of question mark ?
7, 26, 63, 124, 215, 342, ?

Answer & Solution
Correct Answer: Option B

The terms are given in a series
(23 -1) = 7
(33 -1) = 26
(43 -1) = 63
(53 -1) = 124
(63 -1) = 215
(73 -1) = 342
So, the missing term is,
(83 -1) = 511.

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1 Comment
Bharat Chandora
Bharat Chandora 6 years ago
the addition of digit is repeating, and also gives the same answer as B
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