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Directions: In each of the following number series, two terms have been put within brackets. Mark your answer as (a) If both the bracketed terms are right; (b) If the first bracketed term is right and second is wrong; (c) If the first bracketed term is wrong and second is right; and (d) If both the bracketed terms are wrong.


[M.A.T. 2005]
2, 3, (6), 11, 18, (30), 38
Options:
A .  If both the bracketed terms are right
B .  If the first bracketed term is right and second is wrong
C .  If the first bracketed term is wrong and second is right
D .  If both the bracketed terms are wrong
Answer: Option B
Answer: (b)
The correct pattern is +1, +3, +5, +7, +9, +11.
Clearly, the term 6 is correct.
But, 30 is wrong and must be replaced by (18 + 9)
i.e. 27.

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