If a,x,b are in A.P.,a,y,b are in G.P. and a,z,b are in H.P. such that x=9z and `agt0,bgt0`, then

If a,x,b are in A.P.,a,y,b are in G.P. and a,z,b are in H.P. such that x=9z and gt0,bgt0 , then

If a,x,b are in A.P.,a,y,b are in G.P. and a,z,b are in H.P. such that x=9z and a>0, b>0, then

If a,x,b are in A.P.,a,y,b are in G.P. and a,z,b are in H.P. such that x=9z and a>0, b>0, then (a) y=3z. (b) x=3y (c) 2y= x+z (d) none of these

If a,x,b are in AP, a,y,b are in GP and a,z,b are in HP such that x=9z and a > 0 , b > 0 , where a ne b , b ne 0 then x^2/y^2 is _________.

a,b,x are in A.P.,a,b,y are in G.P. and a,b,z are in H.P. then:

a, b, x are in A.P., a,b,y are in G.P. and a, b, z are in H.P. then:

If a,x and b are in AP, a,y and b are in GP and a,z and b are in HP such that x=9z and a > 0 , b > 0 , where a ne b , b ne 0 then x^2/y^2 is _________.

If a,8,b are in A.P and a,4,b are in G.P and a,x ,b are in H.P then x = ………….

If a, 8, b are in A.P, a, 4 , b are in G.P, a , x, b are in H.P then x =

If a, 8, b are in A.P. , a, 4, b are in G.P. and a , x, b are in H.P. then x=………….