EduGoog
In following questions, one term in number series is incorrect.

Find out the incorrect number 89, 78, 86, 80, 85, 82, 83

Option:
A. 83
B. 82
C. 86
D. 78
Answer: C . 86

Justification:

The sequence is - 11, + 9, - 7, + 5, - 3, + 1.
So, 86 is wrong and should be replaced by (78 + 9)  i.e. 87.

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