Multiple Choice Questions on If x and y are natural numbers such that x y 2017 then what is the value of 1 x 1 y ........ for DRDO Exam Preparation

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Multiple Choice Questions

If x and y are natural numbers such that x y 2017 then what is the value of 1 x 1 y ........

Quantitative Aptitude and Numerical Ability (DRDO) (Phase-i and II) Algebra
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    If x and y are natural numbers such that x + y = 2017, then what is the value of (-1)x + (-1)y?

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    Explanation:

    Sum of two numbers can be odd only if one of them is odd and other one is even. Let x be odd and y be even
    ⇒ (-1)x + (-1)y = -1 + 1 = 0
    ∴ The value is 0

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