一袋子中有5顆紅球,任意自袋中取出1顆球,每球被取出的可能性相等,則此球為紅球的機率為何?
3下 2-2 機率

Quiz
•
Mathematics
•
9th Grade
•
Medium
康軒數位 康軒數位
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
每投擲6次就一定有一次是出現1點
每投擲6次則第6次一定出現1點
每投擲6次必定有一次不出現1點
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5次
多於5次
少於5次
不一定
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
正興百貨公司慶祝週年慶,在七月九日的1000位顧客中,將要抽出50位贈送禮品。設每位顧客被抽出的可能性相等,則1000位顧客中的小惠獲贈禮品的機率是多少?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
每投擲2次,就有1次出現正面
每投擲100次,就有50次出現正面
若投擲200次,出現正面的次數可能超過120次
若投擲400次,出現正面的次數一定在175次與225次之間
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將10顆標有1~10等號碼 且材質大小相同的球放入袋中,依取後不放回的方式,取出4顆球,若已取出的號碼分別為8、3、5,那麼下一次抽到10號球的機率為何?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
投擲一個均勻材質的長方體,已知長:寬:高=1:1:2,如圖,則下列選項何者正確?
長方體的每一個面朝上的機率相等
側面為正方形朝上的機率大於側面為長方形朝上的機率
側面為長方形朝上的機率是側面為正方形朝上的機率的2倍
長方體兩個相對面朝上的機率相等
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