若 P(A)=0.5,F(B)=0.4,则P(AUB)等于: A. 0. 6 B. 0. 7 C. 0. 8 D.0. 9

admin2020-12-24  1

问题 若 P(A)=0.5,F(B)=0.4,则P(AUB)等于:
A. 0. 6 B. 0. 7 C. 0. 8 D.0. 9

选项

答案B

解析
转载请注明原文地址:https://ti.zuoweng.com/ti/7WKCKKKQ
相关试题推荐