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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.) 

    (18.22) 2.02 + (13.89) 2.12 –

    (44.88) 2.07 = ? – 1604.85 
    A 45 Correct Answer Incorrect Answer
    B 65 Correct Answer Incorrect Answer
    C 100 Correct Answer Incorrect Answer
    D 125 Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, (18.22) 2.02 + (13.89) 2.12 – (44.88) 2.07 = ? – 1604.85 (18)2 + (14)2 – (45)2 ~ ? – 1605 324 + 196 – 2025 ~ ? – 1605 2125 – 2025 ~ ? ? ~ 100

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