first calculate the probability of all servers are not running well,it is
0.09^10
the probability of at least one working well is
1-0.09^10
仅供参考,统计的东东早忘了,不太确定.
first calculate the probability of all servers are not running well,it is
0.09^10
the probability of at least one working well is
1-0.09^10
仅供参考,统计的东东早忘了,不太确定.