Verbal Reasoning - Series Completion

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

46. 

10, 100, 200, 310, ?

A. 400
B. 410
C. 420
D. 430

Answer: Option D

Explanation:

The pattern is + 90 + 100, + 110,.....

So, missing term = 310 + 120 = 430.


47. 

11, 10, ?, 100, 1001, 1000, 10001

A. 101
B. 110
C. 111
D. None of these

Answer: Option A

Explanation:

The pattern is - 1, x 10 + 1, - 1, x 10 + 1, - 1, x 10 + 1, .....

So, missing term = 10 x 10 + 1 = 101.


48. 

2, 7, 27, 107, 427, ?

A. 1262
B. 1707
C. 4027
D. 4207

Answer: Option B

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.


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