Khan Academy
Khan Academy: Adding Probabilities
Find four probabilities for each problem: P(A), P(B), P(A and B), and P(A or B). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Adding Probabilities
Find four probabilities for each problem: P(A), P(B), P(A and B), and P(A or B).