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Maths|AMU entrance 2020-21|Q71|In the given figure PA,QB,RC are perpendicular to AC and PA=x QB=z RC
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Maths|AMU entrance 2020-21|Q71|In the given figure PA,QB,RC are perpendicular to AC and PA=x QB=z RC=y then the value of 1/x+1/y-1/z=?