3. How many bit strings (i.e. sequences of 0s and ls) of length 15 begin with 010 OR end with 101 (or both)? 4. Suppose I am dealt a 5-card hand, from a regular deck of 52 cards. What is the probability that I am dealt: a) at least three cards with the same value e.g. (9,9,9,3,4), (4,4,4,4,5), etc. b) at least two cards with the same value e.g. (2,2,4,5,6), (Q,Q,Q,2,3), (2,2,4,4,5), etc