面白い問題おしえて〜な 27問目

男子９００人受験、女子１００人受験、定員１００人のときはこうなった。

> sum((choose(woman,i)*choose(man,pass-i)/choose(total,pass))*(i/woman > (pass-i)/man))
[1] 0.4160339
> sum((choose(woman,i)*choose(man,pass-i)/choose(total,pass))*(i/woman == (pass-i)/man))
[1] 0.1389853
> sum((choose(man,i)*choose(woman,pass-i)/choose(total,pass))*(i/man > (pass-i)/woman))
[1] 0.4449808