• 2022-05-28
    设每次试验成功的概率为p(0A: [img=70x27]1803b45104d7aac.png[/img]
    B: [img=90x27]1803b4510c2dd0e.png[/img]
    C: [img=85x26]1803b45113e7d07.png[/img]
    D: [img=92x27]1803b4511c07f01.png[/img]