[" If the lines "x+2ay+a=0,x+3by+b=0],[" and "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, 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: (1) A.P.(2) G.P.(3) H.P.(4) A.G.P.

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

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

If the straight lines 3x+4y+2=0,2x-y+3=0 and 2x+ay-6=0 are concurrent,then a=