概率论学的不错吗!可我扔了十次,五次头,五次尾,怎末办?
所有跟帖:
• 扔奇数次。总会分出来的。:-) -横扫江湖~- ♂ (0 bytes) () 11/13/2006 postreply 20:36:29
• 扔奇数次。总会分出来的。:-) -横扫江湖~- ♂ (0 bytes) () 11/13/2006 postreply 20:36:29
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