210203 DS1 加油站(質數和合成數)
Quiz
•
Mathematics
•
3rd - 4th Grade
•
Practice Problem
•
Hard
Dr Math
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8 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
以下哪個數是質數?(答案可多於一個)
4
11
43
49
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪個數是合成數?
3
7
10
19
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
在 1 至 100 中,最大的質數是 __________ 。
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
在 1 至 100 中,最小的合成數是 __________ 。
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
在 40 至 50 中,有多少個質數?
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
在 30 至 40 中,有多少個合成數?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪項是正確的?
1 是質數 。
1 是合成數 。
1 既是質數,也是合成數 。
1 既不是質數,也不是合成數 。
8.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
以下哪項是正確的?(答案可多於一個)
所有偶數都是合成數。
所有質數都是奇數。
最大的兩位合成數是99 。
最小的兩位質數是11 。
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