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    Question

    Given that x = 80, y = -35 and z = -45, Determine the

    value of [(x┬│ + y┬│ + z┬│)/10┬│]
    A 350 Correct Answer Incorrect Answer
    B 400 Correct Answer Incorrect Answer
    C 378 Correct Answer Incorrect Answer
    D 500 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ;
    As (x + y + z) = (80 тАУ 35 тАУ 45) = 0
    So, x┬│ + y┬│ + z┬│ = 3xyz
    So, (x┬│ + y┬│ + z┬│) = {3 ├Ч 80 ├Ч (-35) ├Ч (-45)} = 378000
    So, required value = {(x┬│ + y┬│ + z┬│)/10┬│} = (378000/1000) = 378

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