有關X45678910P0020040060的精選大全

某*手*擊所得環數X的分佈列為:X45678910P0.020.040.060.090.280.290.22則...
問題詳情:某*手*擊所得環數X的分佈列為:X45678910P0.020.040.060.090.280.290.22則此*手“*擊一次命中環數大於7”的概率為()A.0.28                               B.0.88C.0.79    ...
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