Verbal Reasoning

Topic: Series completion

5,6,9, 15, ?, 40

A.	21	
B.	25
C.	27	
D.	33

Answer: Option B

Explanation:
The pattern is + 1, + 3, + 6,....., i.e. + 1, + (1, + 2), + (1 + 2 + 3),.....So, missing term = 15 + (1 + 2 + 3 + 4) = 25.

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