[" If "a,x,y,z,b" are in "AP," then "x+y...

[" If "a,x,y,z,b" are in "AP," then "x+y+z=15" and if "a,x,y,z,b" are in "HP," then "(1)/(x)+(1)/(y)+(1)/(z)=(5)/(3)],[a,b" are- "],[[" (A) "8,2," (B) "11,3," (C) "9,1," (D) None of these "]]

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