If `a^2+b^2, ab +bc, and b^2 + c^2 ` are in G.P then a, b, c are in

If a^2+b^2,a b+b c ,a n db^2+c^2 are in G.P., then a ,b ,c are in a. A.P. b. G.P. c. H.P. d. none of these

If a,b, and c are in G.P then a+b,2b and b+ c are in

If a , b, c, … are in G.P. then 2a,2b,2c,… are in ….

If a , b ,a n dc are in G.P., then a+b ,2b ,a n db+c are in a. A.P b. G.P. c. H.P. d. none of these

If 1/a,1/b,1/c are in A.P and a,b -2c, are in G.P where a,b,c are non-zero then

If l n(a+c),l n(a-c)a n dl n(a-2b+c) are in A.P., then (a) a ,b ,c are in A.P. (b) a^2,b^2, c^2, are in A.P. (c) a ,b ,c are in G.P. d. (d) a ,b ,c are in H.P.

If a , b , c , are in A P ,a^2,b^2,c^2 are in HP, then prove that either a=b=c or a , b ,-c/2 from a GP (2003, 4M)

If the straight line a x+c y=2b , where a , b , c >0, makes a triangle of area 2 sq. units with the coordinate axes, then a , b , c are in GP a, -b; c are in GP a ,2b ,c are in GP (d) a ,-2b ,c are in GP

For any three positive real numbers a, b and c, 9(25a^2+b^2)+25(c^2-3ac)=15b(3a+c) Then: (1) b, c and a are in G.P. (2) b, c and a are in A.P. (3) a, b and c are in A.P (4) a, b and c are in G.P

For any three positive real numbers a, b and c, 9(25a^2+b^2)+25(c^2-3ac)=15b(3a+c) Then: (1) b, c and a are in G.P. (2) b, c and a are in A.P. (3) a, b and c are in A.P (4) a, b and c are in G.P