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Verbal Reasoning - Series Completion - Discussion

@ : Home > Verbal Reasoning > Series Completion > Section 1 - Discussion

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"Time and tide wait for none."
- Alexander Pope
Directions to Solve

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.

48. 

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

Answer: Option A

Explanation:

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.
Subhra Sankha Saha said: (Fri, Apr 13, 2012 11:32:56 PM)    
 
7-2=5
27-7=20
107-27=80
427-107=320.

5*4=20
20*4=80
80*4=320
320*4=1280

1280+427=1707.(Ans)
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