Verbal Reasoning →Series Completion → Number Series→Question : 1

Find the missing term in the following series:
1, 6, 15, ?, 45, 66, 91
[A]25
[B]26
[C]27
[D]28

28
In the given series, the pattern followed is as follows:
+5, +9, +13, +17, +21, +25, …. So, the missing term would be= 15+13= 28. Thus, correct answer is 28.

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