Reasoning - Series Completion - Discussion

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Q.

1, 5, 14, 30, 55, 91, ?  .                          
A. 130 B. 140
C. 150 D. 160

Answer: Option B
Explaination:

 


The pattern is + 4, + 9, + 16, + 25, + 36, ..... i.e. + 22, + 32, + 42, + 52, + 62,.....
So, missing term = 91 + 72 = 91 + 49 = 140.




Discussion

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