A) 13
B) 11
C) 14
D) 15
Correct Answer: B
Solution :
Subtract ?1? from the alternate terms of the series 1, 3, 5, 7,.......... etc. Like, 1 -1, 3, 5 -1, 7, 9, -1, 11, etc.You need to login to perform this action.
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