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    Question

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

    21           48          

    173         516         1245       2576       ?
    A 4235 Correct Answer Incorrect Answer
    B 4512 Correct Answer Incorrect Answer
    C 5211 Correct Answer Incorrect Answer
    D 4773 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    21 + 3³ = 48 48 + 5³ = 173 173 + 7³ = 516 516 + 9³ = 1245 1245 + 11³ = 2576 2576 + 13³ = 4773

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