3}} \right)}^{z}}\] \[={{2}^{x+2y+3z}}\] \[\THEREFORE x+2y+3z=\FRAC{1}{9}+\frac{8}{9}+\frac{18}{9}\] \[=\frac{27}{9}=3\] \[\therefore A\times B\times C={{2}^{3}}=8.\]