MATH TALENT 2025_Vòng sơ khảo
Quiz
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho A={1;2;3;4}. Từ A lập được bao nhiêu số tự nhiên có 4 chữ số đôi một khác nhau?
32
24
256
1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số cách chọn 2 học sinh từ 7 học sinh là
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một nhóm có 5 nam và 3 nữ. Chọn ra 3 người trong đó có ít nhất 1 nữ. Số cách chọn là
48
46
15
64
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trên mặt phẳng tọa độ Oxy , cho tam giác ABC có A(1;2), B(3;1), C(5;4). Phương trình nào sau đây là phương trình đường cao kẻ từ A của tam giác ABC ?
2x + 3y - 2 = 0
2x + 3y + 8 = 0
3x - 2y + 1 = 0
2x + 3y - 8 = 0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Có bao nhiêu số tự nhiên có hai chữ số mà cả hai chữ số đều lẻ?
25
20
50
10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ai là người đầu tiên chứng minh thành công tổng ba góc trong một tam giác bằng 180 độ
Pythagoras
Thales
Euclid.
Issac Newton.
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