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    Select the alphanumeric-cluster that can replace the question mark (?) in the following series.5A, 7C, 6E, 8G, ?, 9K, 8M
    Question

    Select the alphanumeric-cluster that can replace the question mark (?) in the following series.
    5A, 7C, 6E, 8G, ?, 9K, 8M

    A.

    7J

    B.

    8H

    C.

    9J

    D.

    7I

    Correct option is D

    Given: 5A, 7C, 6E, 8G, ?, 9K, 8M
    Logic: The number is increasing and decreasing by + 2 and  - 1 alternative and the letter is increasing by 2 place.
    5 + 2 = 7, 7 - 1 = 6, 6 + 2 = 8, 8 - 1 = 7
    A + 2 = C, C + 2 = E, E + 2 = G, G + 2 = I
    The code is 7I.
    Thus, correct option is (d).

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