Multiple Choice Questions

Odd man out 1 3 7 15 27 63 127 ........

Quantitative Aptitude (CSC) Number series

Odd man out: 1, 3, 7, 15, 27, 63, 127

The sequence is +2, +4, +8 i.e. +2, +2², +2³,.... .

So, 27 is wrong and must be replaced by (15 + 2⁴) i.e. (15 + 16) or 31.

Hence, option 3 is the correct answer.

Submit Error

please review the answer. the correct answer is 31 which is not given in the options

Munesh Kumari

Rectified

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