Question

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

    3 4 10 33 136

    ?
    A 385 Correct Answer Incorrect Answer
    B 685 Correct Answer Incorrect Answer
    C 885 Correct Answer Incorrect Answer
    D 985 Correct Answer Incorrect Answer

    Solution

    3 x 1 + 1 = 4 4 x 2 + 2 = 10 10 x 3 + 3 = 33 33 x 4 + 4 = 136 136 x 5 + 5 = 685

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