If the lines `x+2ay+a=0, x+3by+b=0, x+4cy+c=0` are concurrent, then a, b, c are in

If the lines x+2ay+a=0, x+3by+b=0 and x+4cy+c=0 are concurrent, then a, b, c are in:

If the lines x+2ay+a=0, x+3by+b=0 and x+4cy+c=0 are concurrent, then a, b, c are in :

If the lines x+2ay+a=0, x+3by+b=0, x+4cy+c=0 are concurrent, then a,b and c are in

If the lines x+2ay+a=0,x+3by+b=0 and x+4cy+c=0 are concurrent then a,b,c are in

If the lines : x+2ay+a=0, x+3by+b=0 and x+4cy+c=0 are concurrent, where a,b,c are non-zero real numbers, then :

If the lines 2x-ay+1=0, 3x-by+1=0, 4x-cy+1=0 are concurrent, then a, b, c are in

if the lines x + 2ay + a = 0, x + 3by + b = 0 and x + 4cy + c = 0 are concurrent, then a, b, c are in: (1) A.P.(2) G.P.(3) H.P.(4) A.G.P.

If the lines 2x - ay + 1 = 0, 3x – by + 1 = 0, 4x-cy+1 =0 concurrent, then a, b, c are in (A) A.P. (B) G.P. (C) H.P. (D) A.G.P

For a ne b ne c if the lines x + 2ay + a = 0 , x + 3by + b = 0 and x + 4cy + c = 0 ar concurrent , then a , b, c are in

If the lines 2x-ay+1=0,3x-by+1=0,4x-cy+1=0 are concurrent,then a,b,c are in