
2-1習作
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
天文 王
Used 4+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列何者全部都是質數?
1、29、37
23、47、91
37、59、97
67、73、87
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
將正整數 N 的所有正因數由小到大依序排列如下:1、2、a、b、c、d、21、e,則 N + d =?
42
56
14
72
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
如果五位數 58□12 是 6 的倍數,則 □ 所代表的數字為何?
0~9
2、5、8
2、8
2
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A = 2468916,則 A 為下列哪些數的倍數?
(甲)3、(乙)6、(丙)8、(丁)9、(戊)11、(己)12
甲、乙
乙、丙、丁
乙、丁、戊
甲、乙、丁、己
5.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
設 a = 15 × 16 × 17 × 18 × 19 × 20,則 a 所有相異質因數的和為________。
6.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
231192 的標準分解式為 2a × 32 × b2 × 19,則 a + b =_______。
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列敘述何者正確?
偶數一定是 2 的倍數
3 的倍數一定是 9 的倍數
最小的合數是 2
最小的質數是 1
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