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.) 11.91 × 26.02 + ? × 18.01 = 141.97 × √37  
    A 30 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 57 Correct Answer Incorrect Answer
    D 21 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, 11.91 × 26.02 + ? × 18.01 = 141.97 × √37 12 × 26 + ? × 18 ~ 142 × √36 312 + ? × 18 ~ 142 × 6 312 + ? × 18 ~ 852 ? × 18 ~ 540 ? ~ 540 ÷ 18 ? ~ 30

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