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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.) 10.89 × √80.9 + 7.12 × (27.83)(1/3) = 14.86 × ?
    A 57 Correct Answer Incorrect Answer
    B 8 Correct Answer Incorrect Answer
    C 21 Correct Answer Incorrect Answer
    D 27 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, 10.89 × √80.9 + 7.12 × (27.83)(1/3) = 14.86 × ? 11 × √81 + 7 × (27)(1/3) ~ 15 × ? 11 × 9 + 7 × 3 ~ 15 × ? 99 + 21 ~ 15 × ? ? ~ 120 ÷ 15 ? ~ 8

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