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hongnhung2012
2 năm trước
Bài 4: Viết tập hợp sau bằng cách liệt kê các phần tử. a) A = {x thuộc N}10 < x <16} a. B = {x thuộc N}10 ≤ x ≤ 20 b) C = {x thuộc N}5 < x ≤ 10} c) D = {x thuộc N}10 < x ≤ 100} d) E = {x thuộc } < x <2987} e) F = {x thuộc N*}x < 10}
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