Mathematics
Junior High
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解き方教えてください🙏
ちゅうせん
A,B,C,D,Eの5人の中から、抽選で3人の当番を選ぶとき,BとCが,2人とも選ば
れる確率を求めなさい。
佐賀
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解き方教えてください🙏
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ありがとうございます!