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    Question

    Which of the following statements is/are correct?

    (a) The sum 1³  + 2³  + 3³  + to ten terms, lies between 3020 and 3030 (b) If x is subtracted from the sum 1³  + 3³  + 5³  + ... to 10 terms, then it becomes a square. The least value of x is 17. (c) 11³  + 12³  + 13³  + ... + 20³  = 41075.
    A (a) and (c) Correct Answer Incorrect Answer
    B (a) only Correct Answer Incorrect Answer
    C (b) only Correct Answer Incorrect Answer
    D (a) and (b) Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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