Multiple Choice Questions on Simplify the given equation 1 x y y z 1 y z z x 1 z x x y ........ for CDS Exam Preparation

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Multiple Choice Questions

Simplify the given equation 1 x y y z 1 y z z x 1 z x x y ........

Quantitative Aptitude (CDS) Simplification
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    Simplify the given equation  1/(x-y)(y-z) +1/(y-z)(z-x) +1/(z-x)(x-y )?

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    Explanation:

    1/(x-y)(y-z)   +1/(y-z)(z-x)  +1/(z-x)(x-y  )   
    =(z-x)+(x-y)+(y-z)/(x-y)(y-z)(z-x)   
    =(z-x+x-y+y-z  )/( x-y)(y-z)(z-x)  
    =0/( x-y)(y-z)(z-x)
    =0 

    By: bhavesh kumar singh
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