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Several 0 and 1 are arranged in a 10*10 palace as follows. Among all the number 0, what is the probability that they are arranged in both an odd row and an odd column?
Give your answer as a fraction.
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当前版本由 354261qil 更新于2024-07-16 17:16:32 感谢由 354261qil 对此题目的解答所做出的贡献。
既在奇数行又在奇数列的0的数量。第一行1个，第三行2个，第五行3个，第七行4个，第九行5个。0总共有55个，概率是（1+2+3+4+5）/55=3/11。
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当前版本由 知日升 更新于2024-11-16 17:25:09 感谢由 知日升 对此题目的解答所做出的贡献。
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华西歼G机
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它在第一列，也在第一行，所以一是奇数
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哥们是不是看成0-index了
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197039ifyy
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