If the lines `ax+by+c = 0, bx+cy+a = 0 and cx+ay+b=0 a != b != c` are concurrent then the point of concurrency is

If the lines ax+by+c=0,bx+cy+a=0 and cx+ay+b=0a!=b!=c are concurrent then the point of concurrency is

If the three distinct lines x + 2ay + a = 0 , x+ 3by + b = 0 and x + 4ay + a = 0 are concurrent , then the point (a,b) lies on a .

If the lines ax+by+c=0,bx+cy+a=0 and cx+ay+b=0 be concurrent,then:

If the lines ax + ky + 10 =0, bx + (k+1) y + 10 =0 and cx + (k +2)y + 10=0 are concurrent, then

If the lines x+ 3y -9=0 , 4x+ by -2 =0, and 2x -4 =0 are concurrent, then the equation of the lines passing through the point (b,0) and concurrent with the given lines, is

If the lines ax+by+c=0, bx+cy+a=0 and cx+ay+b=0 (a, b,c being distinct) are concurrent, then (A) a+b+c=0 (B) a+b+c=0 (C) ab+bc+ca=1 (D) ab+bc+ca=0

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 ax+12y+1=0 bx+13y+1=0 and cx+14y+1=0 are concurrent then a,b,c are in