Probability of recieving an offer Your friend tells you that he had two job interviews last week. He says that based on how the interviews went, he thinks he has a 20% chance of receiving an offer from each of the companies he interviewed with. Nevertheless, since he interviewed with two companies, he is 50% sure that he will receive at least one offer. Is he right?
My Approach:
since he had 2 interviews, 20% each, the total probability of getting should be 40%?

I just want to point out that we needn't assume the independence of events. In that case we can use union bound to get that $P( \text{at least one offer}) \leq P(\text{offer from A}) + P(\text{offer from B}) =2 \cdot 1/5 =0.4$, which is still less than $0.5$.
