Question 336208
P(One or other or both) = P(Buys Bread) + P(Buys Milk) - P(Buys Both)



P(One or other or both) = 0.6 + 0.5 - 0.3



P(One or other or both) = 1.1 - 0.3



P(One or other or both) = 0.8



So the probability of buying one or the other, or both, is 0.8 (which is an 80% chance)