1.

A plane meets the co-ordinate axes at A,B,C and (alpha,beta,gamma) is the centroid of the triangle ABC. Then the equation of the plane is

Answer»

`alphax+betay+gammaz=1`
`(x)/(alpha)+(y)/(beta)+(Z)/(gamma)=1`
`(x)/(alpha)+(y)/(beta)+(z)/(gamma)=3`
`(3X)/(alpha)+(3y)/(beta)+(3Z)/(gamma)=1`

Answer :C


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