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    Question

    7 7 ? 43 163

    831 What should come in place of the question mark (?) in the following number series?
    A 13 Correct Answer Incorrect Answer
    B 16 Correct Answer Incorrect Answer
    C 6 Correct Answer Incorrect Answer
    D 20 Correct Answer Incorrect Answer
    E 15 Correct Answer Incorrect Answer

    Solution

    7 × 1 + 0² = 7 7 × 2 - 1² = 13 13 × 3 + 2² = 43 43 × 4 - 3² = 163 163 × 5 + 4² = 831

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