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    Question

    Which of the following statements is/are correct?

    (α) Σ (n² – n) = 330, n = 1, 2, ..., 10 (b) Σ (n² + n) = 728, n = 1, 2, ..., 12 (c) Σ (n² + 3n + 1) = 352, n = 1, 2 ,...,8
    A (b) and (c) Correct Answer Incorrect Answer
    B (a) and (b) Correct Answer Incorrect Answer
    C (b) only Correct Answer Incorrect Answer
    D (a) only Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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