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    Question

    What value should come in place of (?) question mark in

    the following number series. 2, 6, 12, 20, 30, ?
    A 21 Correct Answer Incorrect Answer
    B 91 Correct Answer Incorrect Answer
    C 52 Correct Answer Incorrect Answer
    D 42 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Differences: +4,+6,+8,+10 ⇒ next +12 ⇒ 30+12 = 42.

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