
排列組合混合題 中等難度

Quiz
•
Mathematics
•
11th Grade
•
Hard
Victor Yeung
Used 7+ times
FREE Resource
10 questions
Show all answers
1.
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1 min • 1 pt
倩兒想郵寄聖誕卡給5位朋友。已知每位朋友只會收到一張卡。求下列各情況中郵寄聖誕卡的方法數目。
(a) 倩兒購買了5張不同的聖誕卡。
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
倩兒想郵寄聖誕卡給5位朋友。已知每位朋友只會收到一張卡。求下列各情況中郵寄聖誕卡的方法數目。
(b) 倩兒購買了10張不同的聖誕卡。
3.
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1 min • 1 pt
某班有16名男生及14名女生。老師在班中隨機選出5人組成一個班會。求組成只有男生的班會的方法數目。
4.
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1 min • 1 pt
從英文字「DANGEROUS」中選取六個英文字母。求當中恰好有三個元音字母的組合的數目。
5.
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1 min • 1 pt
考慮六個數字{1, 2, 4, 5, 6, 8}。
組成的三位數中有多少個為偶數?
6.
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1 min • 1 pt
偉豪、少強及5位朋友站成一行。
求偉豪及少強必須站在一起的排列方法的數目。
7.
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1 min • 1 pt
4名男孩及4名女孩坐成一行。求男孩及女孩必須相隔而坐的排列數目。
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