In following questions, one term in number series is incorrect.
Find out the incorrect number 125, 126, 124, 127, 123, 129

126

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124

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123

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129

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Solution

The correct option is D 129
The sequence is + 1, - 2, + 3, - 4, + 5.
So, 129 is wrong and and must be replaced by (123 + 5) i.e. 128.

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