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    Select the letter from among the given options that can replace the question mark (?) in the following series.C, G, K, O. ?, W
    Question

    Select the letter from among the given options that can replace the question mark (?) in the following series.
    C, G, K, O. ?, W

    A.

    U

    B.

    S

    C.

    T

    D.

    R

    Correct option is B

    The given series is: C, G, K, O, ?, W
    To find the pattern, look at the positions of each letter in the alphabet:
    · C is the 3rd letter.
    · G is the 7th letter.
    · K is the 11th letter.
    · is the 15th letter.
    The pattern here is that each letter is 4 positions ahead of the previous letter.
    Following this pattern:
    O (15th letter) + 4 = S (19th letter)
    Thus, the missing letter is S.
    Correct answer: (b) S.

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