
PHẦN I. TRẮC NGHIỆM LỰA CHỌN PHƯƠNG ÁN
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Medium
Tuấn Hoàng
Used 7+ times
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31 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu nào sau đây không là mệnh đề?
Tam giác đều là tam giác có ba cạnh bằng nhau.
3 < 1.
4 - 5 = 1.
Bạn học giỏi quá!
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho mệnh đề “∀x∈R, x² - x + 7 < 0”. Hỏi mệnh đề nào là mệnh đề phủ định của mệnh đề trên?
∃x∈R, x² - x + 7 ≥ 0.
∀x∈R, x² - x + 7 > 0.
∃x∈R, x² - x + 7 < 0.
∃x∈R, x² - x + 7 < 0.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3. Cho tập hợp A = {a, b, c, d}. Tập A có mấy tập con?
16.
15.
12.
10.
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Câu 4. Cho tập hợp X = {a, b}, Y = {a, b, c}. X ∪ Y là tập hợp nào sau đây?
{a; b}
{c}
{a; b; c}
{a,b,c,d}
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho A = (-1;5], B = (2;7). Tìm A ∩ B.
(-1;2]
(2;5]
(-1;7)
(-1;2)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các bất phương trình sau, bất phương trình nào là bất phương trình bậc nhất hai ẩn?
2x - 5y + 3z ≤ 0.
3x² + 2x - 4 > 0.
2x² + 5y > 3.
2x + 3y < 5.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các bất phương trình bên dưới, bất phương trình nào có miền nghiệm được biểu diễn trên hệ trục tọa độ Oxy như hình vẽ bên dưới?
2x + 2y ≤ 0.
x + y ≥ 2.
x + y ≤ 2.
x - y ≤ 2.
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