
I. Trắc nghiệm
Authored by 744 Hoa
Mathematics
10th Grade
Used 2+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Công thức tính diện tích S của tam giác ABC là ?
2.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Tuổi thọ của 20 bóng đèn được thắp thử được ghi lại ở bảng số liệu ( đơn vị: giờ)
Tính tuổi thọ trung bình của số bòng đèn trên.
1175,5
1174,5
1173,5
1176,5
3.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Phần bị gạch của sơ đồ ven mô tả tập hợp nào?
A ⋃ B
A ⋂ B
A\B
CAB
4.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Cho giá trị gần đúng của 8/17 là 0,47. Sai số tương đối của 0,47 là?
1,20. 10-3
1,25. 10-3
0,001
0,002
5.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
Chọn mệnh đề sai:
∃ x ∈ ℝ, 2x² - 3 ≤ 0
∀ x ∈ ℝ, x² > 0
∀ x ∈ ℝ, x.(x+1) ⋮ 2
∃ x ∈ ℝ, x² > x
6.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
0
1
2
3
7.
MULTIPLE CHOICE QUESTION
1 min • 20 pts
8
4
16
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