If `2log(x-z)-log(x-2y+z)=log(x+z),` then `x,y` and `z` are in

If log(x+z)+log(x-2y+z)=2log(x-z)," then "x,y,z are in

If ln(x+z)+ln(x-2y+z)=2ln(x-z) then

If log_(10)x,log_(10)y,log_(10) z are in AP then x, y, z are in

If log_(10)x, log_(10)y, log_(10)z are in AP, then x,y,z are in:

If "log"_(y) x = "log"_(z)y = "log"_(x)z , then

If log, y, log, x, log, z are in G.P. xyz 64 and x y, z' are in A.P., then

If log x, log y and log z are in AP, then

If log_(2)(log_(3)(log_(4)(x)))=0 and log_(3)(log_(4)(log_(2)(y)))=0 and log_(4)(log_(2)(log_(2)(z)))=0 then the sum of x,y and z is _(-)