• 2022-06-03
    设 [tex=0.786x1.0]kEam2pLJe4uAYVdcny2W5g==[/tex],[tex=0.786x1.0]ri6gmnf1+J9dGqG5/1sV6A==[/tex],[tex=0.714x1.0]9fIXCQOmrgOp2L5B47vYUQ==[/tex]为三个事件,用[tex=0.786x1.0]kEam2pLJe4uAYVdcny2W5g==[/tex],[tex=0.786x1.0]ri6gmnf1+J9dGqG5/1sV6A==[/tex],[tex=0.714x1.0]9fIXCQOmrgOp2L5B47vYUQ==[/tex]的运算式表示下列事件:[tex=0.786x1.0]kEam2pLJe4uAYVdcny2W5g==[/tex],[tex=0.786x1.0]ri6gmnf1+J9dGqG5/1sV6A==[/tex],[tex=0.714x1.0]9fIXCQOmrgOp2L5B47vYUQ==[/tex]恰好有两个事件发生;
  • 举一反三