[todd8]

Drake's Fundamentals of Applied Probability Theory does emphasize the tree enumeration of possibilities in it's presentation of probability. It's an excellent introductory text. I remember remarking to a fellow student that the book was so good you didn't need to go to lecture. His reply was that Professor Drake's lectures were so good you didn't need to read the book.

However, in probability thing can quickly get complicated and, for me at least, intuition can't always be trusted. (I probably needed to go to the lectures and read the book.) For examples see either Schwarz's 40 Puzzles and Problems in Probability and Mathematical Statistics or Grimmett and Stirzaker's larger One Thousand Exercises in Probability.

[turaw]

Aah, that's excellent, thank you very much! I'm always on the lookout for interesting course ware and that's quite the strong recommendation.

And those look like excellent exercises as well; thank you doubly :)