I have 9 coins in my pocket. Out of them 3 are faulty with heads on both sides. The remaining coins are fair with a head on one side, and a tail on the other. I randomly pick one coin from my pocket, toss it and put it back. Then I repeat the process. Given that I got 2 heads from the two tosses, what is the probability that I picked at least one biased coin (with two heads)?

Answer rating: 100% (QA)

Let H1 and H2 be the two tosses PH1H2 PH1H2 and ... View the full answer