四位數6□89是3的倍數,那麼□內不可以填入下列哪個數字?
1上 2-1 因數與倍數

Quiz
•
Mathematics
•
7th Grade
•
Medium
康軒數位 康軒數位
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1
2
4
7
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某數543□為3的倍數,且□只可填入0~9的整數,則□中可填的數有幾個?
3個
4個
5個
6個
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列敘述何者正確?
所有的偶數皆為合數
所有的質數皆為奇數
正整數不是質數就是合數
1不是質數也不是合數
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
設n為正整數,且357可以被n整除,則所得的商不可能是下列哪一個?
21
51
57
119
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列關於倍數判別的敘述何者正確?
個位數為0、2、4、6、8的數字均為2的倍數
個位數為3、6、9的數字均為3的倍數
個位數為5的數字才是5的倍數
個位數為5、0的數字均為10的倍數
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知正整數B的質因數分解為2×5×3×7×7,那麼下列何者是B的質因數?
7
10
15
21
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
把n個邊長為1的小正方形拼成一個長、寬皆大於1的矩形,且沒有剩下任何小正方形,則n不可能為下列哪一個數?
12
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15
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