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Câu 8:

Cho tập hợp $A = \left\{ {b;d} \right\}$

Câu 8: Cho tập hợp A={b;d}A = \left\{ {b;d} \right\}A={b;d}. Tập hợp AAA có tất cả bao nhiêu tập con?

Thông tin câu hỏi

Câu 8:

Cho tập hợp $A = \left\{ {b;d} \right\}$ . Tập hợp $A$ có tất cả bao nhiêu tập con?