题目

已知 P(A) = P(B) = 0.5, P(C) = 0.4, P(AB) = P(AC) = 0.2, P(BC) = 0.1, ABC = varnothing,则 P(B cup C mid A cup B) = A. (1)/(2)B. (3)/(4)C. (7)/(8)D. (5)/(8)

已知 $P(A) = P(B) = 0.5$, $P(C) = 0.4$, $P(AB) = P(AC) = 0.2$, $P(BC) = 0.1$, $ABC = \varnothing$, 则 $P(B \cup C \mid A \cup B) = $

A. $\frac{1}{2}$

B. $\frac{3}{4}$

C. $\frac{7}{8}$

D. $\frac{5}{8}$

题目解答

答案

C. $\frac{7}{8}$