Assume that there are 8 different issues of Time magazine, 7 different issues of Popular Science, and 4 different issues of Sports Illustrated, including the December 1st issue, on a rack. You choose 4 of them at random.
(1) What is the probability that you choose 3 issues of Time and 1 issue of Popular Science?
(2) What is the probability that you choose at least 1 of the Popular Science magazines?