月影无痕 当前离线
高级会员
What is the probability that event E or event F or both will occur?
(1) The probability that event E will occur is 0.6.
(2) The probability that event F will occur is 0.4.
答案为什么是E？我选C
虚无飘渺 当前离线
a typical eithor-or choice.
they can be either mutually exclusive or intersected
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