Draw one card without putting it back, then draw another, and chain the two step probabilities together, P(A∩B) = P(A)·P(B|A)
Module goal. Tell apart "they don't affect each other" from "knowing one, now look at the other," and master the multiplication, conditional, and total probability rules
eastmath.com · 33.4 Independence and Conditional Probability · 33.4.3 The Multiplication Formula