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minhkhakyt
2 năm trước
1/ Cho tập hợp B = {1;3;5}. Hỏi tập hợp B có bao nhiêu tập hợp con? 2/ Cho tập hợp A = {a;b;c;d}. Hãy liệt kê ra tất cả các tập hợp con có 2 phần tử của tập hợp A. 3/ Cho tập hợp A = {0;1;2;3;4}. Hãy liệt kê tất cả tập hợp con có 3 phần tử của tập hợp A.
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