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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.) 31.2 × 19.7 + 48.3 × 2.1 = ?
    A 634 Correct Answer Incorrect Answer
    B 650 Correct Answer Incorrect Answer
    C 805 Correct Answer Incorrect Answer
    D 716 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    31.2 × 19.7 ≈ 31 × 20 = 620

    48.3 × 2.1 ≈ 48 × 2 = 96

    ⇒ 620 + 96 = 716

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