Question

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

    3 15 35 63 99 ?

    A 143 Correct Answer Incorrect Answer
    B 133 Correct Answer Incorrect Answer
    C 111 Correct Answer Incorrect Answer
    D 141 Correct Answer Incorrect Answer
    E 109 Correct Answer Incorrect Answer

    Solution

    1 × 3 = 3 3 × 5 = 15 5 × 7 = 35 7 × 9 = 63 9 × 11 = 99 11 ×1 3 = 143

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