If a1x=b1y=c1z and a,b,c are in G.P., then which of the following are true?
Let a1x=b1y=c1z=k. ⇒a=kx,b=ky,c=kz.
Since a,b,c are in G.P., b2=ac.∴k2y=kx.kz=kx+z∴2y=x+z⇒x,y,z are in A.P.
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