(Q1) Find all maximal ideals of the following rings: $$ \begin{array}{1) \text { 1- }\left( \mathrm{Z}_{27},+_{27}, .27 ight) W \text { 2- }\left( \mathrm{Z}_{45), +_{45), .45 ight) W \text { 3- }\left( \mathrm{Z}_{54}+_[54], 54 ight) W \text { 4- }\left( \mathrm{Z}_{80),+_[80), .80 ight) W \text { 5- }\left( \mathrm{Z}_{70),+_{70), .70 ight) \text { 6-}\mathrm{Z},+, .) \text { 7- }\left(\mathrm{Z}_{47),+_ [47], .47 ight) \text { 8- }(\mathbb{C},+, .) \text { 9- )(\mathcal(R),+, .) \end{array) $$ SP.SD.4151