" The lines "(x)/(1)=(y)/(2)=(z)/(3)" and "(x-1)/(-2)=(y-2)/(-4)=(z-3)/(-6)" are "

The lines (x)/(1)=(y)/(2)=(z)/(3) and (x-1)/(-2)=(y-2)/(-4)=(3-z)/(6) are

Lines (x)/(1)=(y-2)/(2)=(z+3)/(3)" and "(x-2)/(2)=(y-6)/(3)=(z-3)/(4) are

The lines (x-2)/(1)=(y-3)/(2)=(z-4)/(3) and (x-1)/(-5)=(y-2)/(1)=(z-1)/(1) are

The lines (x-2)/(1)=(y-3)/(2)=(z-4)/(3)and(x-1)/(-5)=(y-2)/(1)=(z-1)/(1) are

if the lines (x)/(1)=(y)/(2)=(z)/(3),(x-1)/(3)=(y-2)/(-1)=(z-3)/(4) and (x+k)/(3)=(y-1)/(2)=(z-2)/(h) are concurrent then

If the lines (x)/(1)=(y)/(2)=(z)/(3),(x-1)/(3)=(y-2)/(-1)=(z-3)/(4) and (x+k)/(3)=(y-1)/(2)=(z-2)/(h) are concurrent then

" The point of intersection of lines "(x-1)/(2)=(y-2)/(3)=(z-3)/(4)" and "(x-4)/(5)=(y-1)/(2)=(z)/(1)" is "