Question

    30.01 × √1023 + 196 = ? 2 –

    287 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.)
    A 90 Correct Answer Incorrect Answer
    B 38 Correct Answer Incorrect Answer
    C 10 Correct Answer Incorrect Answer
    D 65 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, 30.01 × √1023 + 196 = ?2 – 287 30 × √ 1024 + 196 ~ ?2 - 287 30 × 32 + 196 ~ ?2 - 287 960 + 196 + 287 ~ ?2 ?2 ~ 1443 ?2 ~ 1444 ? ~ 38

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