If b-c, 2b-x and b-a are in H.P., then a-(x/2), b-(x/2) and c-(x/2) are in

If a,b,c are in A.P; a,x,b are in G.P.and b,y,c are in G.P.then x^(2),b^(2),y^(2) are in

If a/b , b/c , c/a are in H.P., then (a)a^2b,c^2a,b^2c are in A.P. (b)a^2b, b^2c,C62a are in H.P. (c)a^2b,b^2c,c^2a are in G.P. (d) none

If a, b, c are in H.P., then the equation a(b-c) x^(2) + b(c-a)x+c(a-b)=0

If a, b, c are in H.P., then the equation a(b-c) x^(2) + b(c-a)x+c(a-b)=0

If a,b,c are rational and are in G.P and a-b, c-a, b-c are in H.P. then the equations ax^2+4bx-c=0 and a(b-c)x^2+b(c-a)x+c(a-b)=0 have (A) imaginary roots (B) irrational roots (C) rational roots (D) a common root

If a ,b ,a n dc are in G.P., then the equations a x^2+2b x+c=0a n ddx^2+2e x+f=0 have a common root if d/c , e/b ,f/c are in a. A.P. b. G.P. c. H.P. d. none of these