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排列組合及概率

Authored by Abbe Leong

Mathematics

7th Grade

Used 11+ times

排列組合及概率
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6 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

用1到9這九個數字組成沒有重複數字的三位數,其中偶數的個數為

224

280

504

729

720

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

有6個男生和4個女生,從中選出4人參加環山跑活動,要求有女生參加,並且女生人數必須不多於男生人數,則不同的選法有多少種

80

120

170

480

840

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

把 A、B、C和D四個不同的球放到四個不同的盒子中,每個盒子擺放一個球,其中A球不能放到第一個盒子中,B球不能放到第二個盒子中,則不同放法數有多少種

8

10

12

14

16

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

投擲骰子兩次,所得點數的乘積為 12 的概率為

以上皆非

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

袋中有7個黑球和3個白球,從中任取2球,抽到黑球和白球各1個的概率是

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

小明要進行中文、英文、數學測驗,三科測驗合格的概率分別為0.7,0.6和0.5,則他至少有一科測驗合格的概率是

0.64

0.79

0.8

0.86

0.94

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