From $x:y = 2:1$ and $y:z = 2:1$, the relation $y^2 = zx$ shows that $x, y, z$ are in—

Question

Accepted Answer

continued proportion

Answer

arithmetic progression

Answer

harmonic progression

Answer

equal

From x:y=2:1x:y = 2:1x:y=2:1 and y:z=2:1y:z = 2:1y:z=2:1, the relation y2=zxy^2 = zxy2=zx shows that x,y,zx, y, zx,y,z are in—