$a^{2}+b^{2}+c^{2}+d^{2}+e^{2}+f^{2}+g^{2}+h^{2}+i^{2}=7$
Case$-I$ : Seven $(1's)$ and two $(0's)$
${ }^{9} C _{2}=36$
Case$-II$ : One $(2)$ and three $(1's)$ and five $(0's)$
$\frac{9 !}{5 ! 3 !}=504$
$\therefore$ Total $=540$
$7 x+11 y+\alpha z=13$
$5 x+4 y+7 z=\beta$
$175 x+194 y+57 z=361$
ને અસંખ્ય ઉકેલો હોય,તો $\alpha+\beta+2=..............$