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1.4(易) 部分集合についての確率

Last updated at Posted at 2021-07-08

答案

1.

$B\subset A$とすると,

P[A|B^c]\neq 0,\ P[A|B]=1

より題意を満たす.

2.

$A\subset C$とすると,

P[C|A]=1

より題意を満たす.

参考文献

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