【用戶】Dada Da
【年級】國二下
【評論內容】P(A int B) = P(A) * P(B con A) = 0.4*0.35 = 0.14, P(B) = P(A uni B) - P(A) + P(A int B) = 0.69 - 0.4 + 0.14 = 0.43