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    Question

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

    61 71 86 ? 131 161

    A 103 Correct Answer Incorrect Answer
    B 107 Correct Answer Incorrect Answer
    C 106 Correct Answer Incorrect Answer
    D 112 Correct Answer Incorrect Answer
    E 109 Correct Answer Incorrect Answer

    Solution

    61 + 10 = 71 71 + 15 = 86 86 + 20 = 106 106 + 25 = 131 131 + 30 = 161

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