
Ôn tập HK I
Authored by Tuan Huu
Mathematics
10th Grade
Used 4+ times

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73 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 1.1 (B). Trong các câu sau, câu nào là mệnh đề?
A. Hãy giữ gìn môi trường!
B.5+19=24
C. Bạn có rỗi tối nay không ?
D. Hãy trả lời câu hỏi này !
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 1.2 (B). Trong các câu sau, câu nào không là mệnh đề ?
A. Số 2 có phải là số nguyên tố không?
B. Tam giác cân là tam giác có hai cạnh bằng nhau
C. Anh là nước đông dân nhất thế giới
D. 3 là số nguyên tố
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 1.3 (B). Trong các phát biểu sau, phát biểu nào là mệnh đề chứa biến?
A. 2x+5>0
B. √2 là số hữu tỉ
C. 5 là số nguyên tố.
D. 8 là hợp số.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 2.1(B). Phủ định của mệnh đề: "2+3<5" là mệnh đề
A. "2+3>5"
B. "2+3=5"
C. "2+3≥5"
D. "2+3<5"
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 2.2(B). Phủ định của mệnh đề: “∀x ∈ R : x²+1>0" là:
A."∀x∈R:x²+1<0"
B. "∃x∈R: x²+1≤0"
C. "∀x∈ R:x²+1>0"
D."∀x∈R: x²+1=0"
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 2.3(B), Phủ định của mệnh đề P: "∃x ∈ N : x²-3x+2=0" là:
A. P̅: "X∈N: x²-3x+2≠0"
B.P̅: "∀x∈N:x²-3x+2=0"
C.P̅: "∀X∈N:x²-3x+2>0
D.P̅: "∀X∈N: x²-3x+2≠0"
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Câu 3.1(B). Khẳng định nào đúng?
A.√2∈Q
B.1/2 ∈ N
C. -1/2 ∈ Z
D.3 ∈ Z
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