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.) 21.42 × 12.98 + 9.63 × 7.89 – 145.39 = ?
    A 208 Correct Answer Incorrect Answer
    B 500 Correct Answer Incorrect Answer
    C 166 Correct Answer Incorrect Answer
    D 295 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    21.42 × 12.98 + 9.63 × 7.89 – 145.39 = ?

    ≈ 21 × 13 + 10 × 8 – 145

    = 273 + 80 – 145

    = 353 – 145

    = 208

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