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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.

11, 12, 17, 18, 23, 24,

Option:
A. 12
B. 29
C. 30
D. 35
Answer: B . 29

Justification:

The given sequence is a combination of two series :
I.   11, 17, 23, (.....)    and
II.   12, 18, 24.
The pattern in both I and II is + 6.
So, missing number = 23 + 6 = 29.

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