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In "Number Series" question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces

In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces.

5, 6, 7, 8, 10, 11, 14,

Options:

A. 15       B. 16       C. 17       D. 18      

Answer:      A . 15

Justification:      

The given sequence is a combination of two series :
I.    5, 7, 10, 14     and
II.   6, 8, 11, (....)
The pattern in both I and II is + 2, + 3, + 4,....
.'. Missing number = 11 + 4 = 15.


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