Trac nghiem Bai 24 Xau ky tu

Quiz
•
Computers
•
10th Grade
•
Medium
Thành Nguyễn
Used 30+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
s có chứa chữ số
s không có chứa chữ số
2
19
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
19
18
20
21
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Xâu kí tự nào sau đây không hợp lệ?
11111111 = 256
‘123&*()+-ABC’
‘1010110&0101001’
‘Tây nguyên’
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho s1 = “abc”, s2 = “ababcabca”. Các biểu thức sau đây biểu thức nào cho kết quả sai?
“abc123” in s2
s1 in s2
s1 + s1 in s2
“abcabca” in s2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Xâu kí tự ‘123&*()+-ABC’ có độ dài là:
12
11
10
9
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4
5
6
3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1 7 2
8 1 7
8 1 7 2
7 2 3
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