Question 1045669
win A--0.3--prob win B is 0.4, prob lose B is 0.6

lose A--0.7--prob win B is 0.2
Probability of winning both is 0.12
probability of winning exactly one is 0.18 (topI+0.14 (bottom)=0.32
probability of winning at least one is 1- probability of losing both, which is 1-[0.7*0.8]=0.44, which is the sum of winning exactly one and winning both.