Đáp án:
Giải thích các bước giải:
\(\begin{array}{l}a)\,A = \left\{ {2;3} \right\}\\Cac\,tap\,con\,cua\,A\,la:\\A \subset A\\M = \left\{ 2 \right\} \subset A\\N = \left\{ 3 \right\} \subset A\\Q = \left\{ \emptyset \right\} \subset A\end{array}\)
\(\begin{array}{l}b/{\rm{ }}B = \left\{ {a,b,c} \right\}\\Tap\,\,con\,cua\,B\,la:\\B \subset B\\\left\{ {a;b} \right\};\,\,\,\left\{ {b;c} \right\}\,\,;\,\,\,\left\{ {c;a} \right\}\,\, \subset B\\\left\{ a \right\};\,\,\left\{ b \right\};\;\left\{ c \right\} \subset B\end{array}\)
