If x,y and z are in AP, then x, y-1 and z are in?

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If x,y and z are in AP, then x, y^-1 and z are in?

Answer: Option C
:
C
Option (c)Take y=2 and

If X,y And Z Are In AP, Then X, Y-1 And Z Are In?

= 1 and (y+z)/(1-yz) = 3
When y=2. x= -1/3 and z= 1/7,

If X,y And Z Are In AP, Then X, Y-1 And Z Are In?

= 1/2 = y-1 .. hence they are in HP

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