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    Question

    945, 824, 680, 511, ?,

    90 What value should come in the place of (?) in the following questions?
    A 334 Correct Answer Incorrect Answer
    B 390 Correct Answer Incorrect Answer
    C 315 Correct Answer Incorrect Answer
    D 352 Correct Answer Incorrect Answer
    E None of the above Correct Answer Incorrect Answer

    Solution

    945 – 11 ² =   824 824 – 12 ²    = 680 680 –   13 ²  = 511 511 –   14 ²   = 315 315 –   15 ² = 90

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