what is the probability of getting a total of 9 for 6 tosses of a pair of dice A.twice B.at least不是翻译,两个骰子掷6次 情况1：两次为9的概率是多少； 情况2：至少两次为9.,应该是中文意思,求各种方法详解.

what is the date what is the meaning? What is the matter? what is the story What is the happiness? What is the love? what is the pencil what is the matter? what is the matter? what is the love? what is the fuck? What is the man? what is the hell what is the time what is the problem what is the trick? what is the mean?what is the mean?what is the mean?what is the mean? what is the internet