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12 cards from this deck
Outcome of one event doesn't affect outcome of another
P(A)×P(B)P(A) \times P(B)P(A)×P(B)
Only when events are truly independent
Add up to 1
Multiply along the branches
Add up the individual probabilities
78×18=764\frac{7}{8} \times \frac{1}{8} = \frac{7}{64}87×81=647
78×78=4964\frac{7}{8} \times \frac{7}{8} = \frac{49}{64}87×87=6449
For 'and' - finding combined events happening together
For 'or' - finding multiple possible outcomes
One outcome gives no info about the other
Coin flips - first result doesn't affect second
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