Given set \( A=\{1,2,\{3\}, 4,5,\{1,2\}, 7\} \), the possible subsets of \( \operatorname{set} A \) are Selected Answers: 7 \( \begin{array}{ll} & \{1,2,\{3\}\} \\ \text { Answers: } \quad & 7 \\ & \varnothing \\ & \{1,2,3,4,5,1,2,7\} \\ & \{1,2,\{3\}\} \\ & \{1,2,1,2,1,2,1,2\}\end{array} \)