13: Probability Last updated Sep 3, 2021 Save as PDF 12.2: Permutations and Combinations 13.1: The Basics of Probability Theory Page ID52913 David LippmanPierce College via The OpenTextBookStore ( \newcommand{\kernel}{\mathrm{null}\,}\) 13.1: The Basics of Probability Theory13.2: Complements and Unions of Events13.3: Conditional Probability and Intersections of Events