
Phần tử - tập hợp
Authored by Lan TrầnThị
Mathematics
6th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kí hiệu nào sau đây dùng để viết đúng mệnh đề "77 là số tự nhiên" ?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Viết tập hợp A gồm các số tự nhiên nhỏ hơn 5
A={5, 6, 7, 8, 9}
A={1, 2, 3}
A={0, 1, 2, 3, 4}
A={0, 1, 2, 3, 4, 5}
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cách viết tập hợp nào sau đây là đúng?
A = [0; 1; 2; 3]
A = (0; 1; 2; 3)
A = 1; 2; 3
A = {0; 1; 2; 3}
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho B = {2; 3; 4; 5}. Chọn câu sai.
2∈B
5∈B
6∈B
1∉B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho tập hợp A = {x∈N|2 < x ≤ 7} . Kết luận nào sau đây không đúng?
7∈A
Tập hợp A có 5 phần tử
2∈A
Tập hợp A gồm các số tự nhiên lớn hơn 2 và nhỏ hơn hoặc bằng 7
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