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Discussion :: Odd Man Out and Series

  1. Find out the wrong number in the series, and taking this wrong number as the first term of the second series and following the same logic find out the fourth term of the second series.
    8, 4, 4, 6, 12, 28, 90

    2. A.
    18
    B.
    42
    C.
    21
    D.
    24

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    Answer : Option C

    Explanation :

    The given series is *,*1,*1 ,*2,*2 ,*3,

    8*0.5=4

    4*1= 4

    4*1.5=6

    6*2=12

    12*2.5= 30

    So, 28 is a wrong number. The new series begins with 28.
    So, the second number = 28 x = 14

    The third number = 14 x 1 = 14
    The fourth number = 14 x 1 = 21

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