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Series Completion - Verbal and Reasoning

Directions to SolveChoose the correct alternative that will continue the same pattern and replace the question mark in the given series.
Q1:

2, 7, 27, 107, 427, ?

A 1262

B 1707

C 4027

D 4207

ANS:B - 1707

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.