A = {0;1;2;3;4;5;6;7;8;9}
B = {0;1;2;3;4}
tập hợp B là con của tập hợp A
A={0;1;2;3;4;5;6;7;8;9}
B={0;1;2;3;4}
vậy tập hợp B là con của tập hợp A
A = {0; 1; 2; 3; 4; 5; 6; 7; 8; 9};
B = {0; 1; 2; 3; 4}.
B ⊂ A
A= [ 1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ,9 }
B { 1 ,2 ,3 ,4 }
Vậy B là có của tập hợp A
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