1. Có bao nhiêu số có 9 chữ số lập từ các chữ số 1, 2, 3, 4, 5, 6, 7, 8, 9 và chia hết cho 9?
002
1st Grade
•90 Qs
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002
Quiz
•
Chemistry
•
1st Grade
•
Hard
Gia Bao
Used 1+ times
FREE Resource
90 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
9!
9^9
2*9^8
3*8!
9^8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Cho 0,9 < x < 1 và y =𝑥^𝑥, z =𝑥^𝑦 Khi đó:
x < z < y
x < y < z
y < z < x
z < x < y
y < x < z
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. Nếu 64 𝑥−1 chia cho 4 𝑥−1 bằng 256 2𝑥 thì giá trị của x là
A. -2/3
B. -1/3
C. 0
D. 1/4
E. 3/8
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
E
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
E
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
E
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
E
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