31. 如果A、B是互相獨立(independent),則
(1)P(A/B)=A (2)P(B|A)=P(A)(3)P(AUB)=P(A)+P(B)(4) P(A∩B)=P(A)*P(B) (AB) [1,3] (AC) [1, 4] (AD) [2, 3] (AE) [2,4] Ε. [1, 2, 4] (BD) [2, 3, 4]