Khan Academy
Compound Probability of Independent Events
Multiply probabilities when events don't affect each other.
Watch on YouTubeFind the probability of two or more events happening together.
Read this first — it covers the idea in plain language with a worked example.
Events are independent when one doesn't affect the other (like two coin flips). For independent events, multiply the individual probabilities.
What is the probability of flipping heads and then rolling a 3?
Tip
Listing all outcomes in a table or tree diagram is a reliable way to count compound outcomes.
Watch the main video, then check the second take if you want another explanation.
Multiply probabilities when events don't affect each other.
Watch on YouTubeTry a worksheet or work through some problems before the quiz.
A couple of questions to make sure this topic stuck. Retake as many times as you want.
Compound Probability
Two coins are flipped. What is the probability of getting heads on both?