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Discussion :: Odd Man Out and Series

  1. Complete the series 2, 5, 9, 19, 37.......

  2. A.
    76
    B.
    74
    C.
    75
    D.
    None of these.

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    Answer : Option C

    Explanation :

    The second number is one more than twice the first,
    2 x 2 +1 = 5

    The third number is one less than twice the second,
    5 x 2 -1 = 9

    The fourth number is one more than twice the third,
    9 x 2 +1 = 19

    The fifth number is one less than twice the fourth.
    19 x 2 - 1 = 37

    Therefore, the sixth number is one more than twice the fifth. So, the missing number:
    37 x 2 + 1 = 75.


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