Mathematics
Senior High
(2)で4C3 をかけなくていい理由を教えてください
1つのサイコロを続けて4回投げるとき, 次の問いに答えよ.
(1) 4回連続して奇数の目がでる確率を求めよ.
(2)4回目にはじめて1の目がでる確率を求めよ.
たとえば1回日に2の
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