Question

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

    6 2 8 ? 84 416

    A 16 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 15 Correct Answer Incorrect Answer
    D 20 Correct Answer Incorrect Answer
    E 22 Correct Answer Incorrect Answer

    Solution

    6 × 1 - 2² = 2 2 × 2 + 2² = 8 8 × 3 - 2² = 20 20 × 4 + 2² = 84 84 × 5 - 2² = 416

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