Reasoning - Series Completion - Discussion

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Q.

2, 7, 27, 107, 427, ?  .                          
A. 1262 B. 1707
C. 4027 D. 4207

Answer: Option B
Explaination:

 


The pattern is + 5, + 20, + 80, + 320, ...... i.e. + (5 x 12), + (5 x 22), + (5 x 42), + (5 x 82),.....
So, missing term = 427 + (5 x 162) = 427 + 1280 = 1707.




Discussion

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