Multiple Choice Questions on Odd man out 1 3 7 15 27 63 127 ........ for Combined State Civil Services Preparation

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Multiple Choice Questions

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

Quantitative Aptitude (CSC) Number series
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    Odd man out: 1, 3, 7, 15, 27, 63, 127

    63

    Incorrect Answer

    7

    Incorrect Answer

    27

    Correct Answer

    15

    Incorrect Answer
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    Explanation:

    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.

    Next

    Let's Discuss

    Parul Aggarwal

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

    0 0 reply
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