# The number of non-arrival solutions of the system $x-y+z=0, x+2y-z=0,2x+y+3z=0$ is

$\begin {array} {1 1} (a)\;0 & \quad (b)\;1 \\ (c)\;2 & \quad (d)\;3 \end {array}$

(a) 0
answered Nov 7, 2013 by