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    Question

    What approximate value will come in place of the

    question mark (?) in the following question? (Note: You are not expected to calculate the exact value.) 15.91 X 15.19 − (13.13² - 11.94²) - ³√8001 = ?² - 29.84
    A 15 Correct Answer Incorrect Answer
    B 50 Correct Answer Incorrect Answer
    C 33 Correct Answer Incorrect Answer
    D 28 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, 15.91 X 15.19 − (13.13² - 11.94²) - ³ √ 8001 = ?² - 29.84 16 X 15 − (13² - 12²) - ³ √ 8000 ~ ?² - 30 240 − (169 - 144) - 20 + 30 ~ ?² ?² ~ 245 - 20 + 30 ?² ~ 225 ? ~ 15

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