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    Select the number that can replace the question mark (?) in the following series.12, 17, 14, 19, 16, 21, 18, ?
    Question

    Select the number that can replace the question mark (?) in the following series.
    12, 17, 14, 19, 16, 21, 18, ?

    A.

    22

    B.

    23

    C.

    18

    D.

    20

    Correct option is B

    Given: 12, 17, 14, 19,16, 21, 18, ?
    Logic: 1st term + 2 = 3rd term, 2nd term + 2 = 4th term,.......
    Let's solve it :
    First series: 12, 14, 16, 18, 
    12 + 2 = 14 , 14 + 2 = 16, 16 + 2 = 18
    Second series: 17, 19, 21, 
    17 + 2 = 19, 19 + 2 = 21, 21 + 2 = 23
    So, the next number will be: 23.
    Thus, the correct option is (b) 23.

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