若规定\(E=\{a_{1},a_{2}…a_{10}\}\)的子集\(\{a_{k_{1}},a_{k_{2}}…,a_{k_{n}}\}\)为\(E\)的第\(k\)个子集，其中\(k=2^{k_{1}-1}+2^{k_{2}-1}+2^{k_{3}-1}+…+2^{k_{n}-1}.\)则
\((1)\{a_{1},a_{3}\}\)是\(E\)的第 ______ 个子集；
\((2)E\)的第\(211\)个子集是 ______ ．