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    Question

    What should come in place of the question mark (?) in the following number series?

    21, 63, 315, ?, 19845,

    218295
    A 2205 Correct Answer Incorrect Answer
    B 2116 Correct Answer Incorrect Answer
    C 2330 Correct Answer Incorrect Answer
    D 2575 Correct Answer Incorrect Answer

    Solution

    21 × 3 = 63 63 × 5 = 315 315 × 7 = 2205 2205 × 9 = 19845 19845 × 11 = 218295

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