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    Question

    What approximate value should come in the place of (?) in the following questions? (Note:- You don't need to calculate the exact values)

    189.23 + 18.11² + ?³ = √841.76 *

    28.94
    A 13 Correct Answer Incorrect Answer
    B 2 Correct Answer Incorrect Answer
    C 7 Correct Answer Incorrect Answer
    D 3 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    189.23 + 18.11² + ?³ = √841.76 * 28.94

    189 + 18² + ?³ = √842 * 29

    189 + 324 + ?³ = 29 * 29

    513 + ?³ = 841

    ?³ = 328

    ? ≈ 7

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