最大公因數與最小公倍數
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Medium
柯子信 柯子信
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者為23×3×5與2×32×52的公倍數?
24×32×5
23×3×52
2×3×5
23×33×53
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
在「25、26、27、28」四個數中,哪一個數與24互質?
25
26
27
28
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
( )下列哪一個選項中的兩個數互質?
21、35
18、49
14、63
36、42
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
哥哥、弟弟在同一間公司上班,哥哥每上班3天休假1天,弟弟每上班4天休假1天,若恰巧哥哥、弟弟同在這個星期日休假,那麼下次兩人同在星期日休假的日子和這一次相差幾天?
42
70
84
140
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
有一個三角形公園,各邊的長度分別是150公尺、120公尺、90公尺,今小逸想在其周圍種樹,且希望相鄰的兩棵樹之間的距離相等。已知在三角形公園的三個頂點都要各種一棵,請問兩棵樹之間的距離最長為多少公尺?
10公尺
20公尺
30公尺
40公尺
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列哪一個數是23×3×52的因數?
23×7
24×3×5
22×3×5
2×32×52
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列哪一個數不是15×16×69的因數?
10
14
92
115
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