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Question

In following questions, one term in number series is incorrect.
Find out the incorrect number 89, 78, 86, 80, 85, 82, 83

A
83
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B
82
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C
86
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D
78
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Solution

The correct option is C 86
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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