题目内容:
If a risk event has a chance of occurring 15 times out of 45 times, based on experiences with like events, what is the probability that the event will occur on the next project? ( )A.90%
B.45%
C.15%
D.33% A.90%
B.45%
C.15%
D.33%
参考答案:
答案解析: