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CASINOS_FREE_ONLINE
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順列 基本確認問題
次の問いに対して,正しいと思うものを1つ選んでください。
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男子3人,女子2人が1列に並ぶとき,女子2人が隣り合うような並び方は,何通りあるか,という場合の数を求めるための式で正しいものを選んでください。
*
5 points
5!
4!×2!
3!×(4_P_2)
4!
3!×2!
この中に当てはまるものはない
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