Question

    (11.99)2 + 171.16 + (3.33) 2 =

    ?2  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 98 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 68 Correct Answer Incorrect Answer
    D 58 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, (11.99)2 + 171.16 + (3.33)2 = ?2 Or, 122 + 171 + 32 ~ ?2 Or, 144 + 171 + 9 ~ ?2 Or, 324 ~ ?2 Or, ? ~ ± 18

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