TVET CHNS,Eng,Maths
Senior High
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這應該是最後一題了，拜託好心的數學大神
答案左上角（52）
5. 設袋中有50元硬幣2個、10元硬幣3個,假設每個硬幣被取到的機會均
100
20
52
等,今自袋中任取兩個,試求其期望值。
60
415)=C2=10
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