下列古典概型的说法中正确的个数是( ) ①试验中所有可能出现的基本事件只有有限个; ②每个事件出现的可能性相等; ③基本事件的总数为n,随机事件A包含k个基本事件,则P(A)= k n ; ④每个基本事件出现的可能性相等.
A.
1
B.
2
C.
3
D.
4
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】Cutting global warming pollution would not only make the planet healthier, it would make people healthier too, new research suggests. Cutting carbon dioxide emissions could save millions of lives, mos...
【简答题】Cutting global warming pollution would not only make the planet healthier, it would make people healthier too, new research suggested. Cutting carbon dioxide emissions could save millions of lives, mo...