For question 1e the answer we came up with is 1/2. But the answer key has 1/6. Can someone explain the discrepancy? Because according to the formula, P(AorB)=P(A) +P(B), so since both cards occupy half of the space, not drawing both on the first try should be half. I can't come up with 1/6 as the key indicated. Someone please show the steps? Thanks! We seem to have more discrepancies with the answer key on the probability section than anywhere else.
This is somewhat confusing. I am assuming both events are independent of each other, because regardless where the first coin landed, the 2nd coin is free to land on it as well. Therefore, we think the answer should be 1/5.