将一枚均匀硬币反复抛掷10次,已知前三次抛掷中恰出现了一次正面,则第二次出现正面的概率为()
A.1/3
B.1/2
C.1/4
D.3/10
正确答案是A
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。
本文链接:https://doc.20230611.cn/post/273646.html
上一篇:如果注释导致原文思维( ),事情( ),那就值得斟酌,需要改正。
如果注释导致原文思维( ),事情( ),那就值得斟酌,需要改正。
下一篇:Could you imagine your parents choosing your husband or wife for you? And can you imagine not setting eyes on him or her until your wedding day? This situation is common in India, the Middle East and many parts of Africa. Marriage c
Could you imagine your parents choosing your husband or wife for you? And can you imagine not setting eyes on him or her until your wedding day? This situation is common in India, the Middle East and many parts of Africa. Marriage c