Question 1192254
winning both is 0.3*0.4=0.12
winning neither 0.7*0.8, the complement of winning=0.56
winning at least 1 is the complement of the second one, or 0.56, and that is 1-0.56=0.44
winning A alone is 0.3*0.6=0.18
winning B alone is 0.7*0.2=0.14
Ignoring the at least 1, the other four add to 1.0, which they must.