If x,y,zx, y, zx,y,z are in GP, which of the following is always true?
x+y,y+z,z+xx+y, y+z, z+xx+y,y+z,z+x are in GP
x2,y2,z2x^2, y^2, z^2x2,y2,z2 are in GP
x+z=2yx+z = 2yx+z=2y
x−y,y−z,z−xx-y, y-z, z-xx−y,y−z,z−x are in GP