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10 questions from this quiz
Events that cannot happen at same time
P(A)+P(B)P(A) + P(B)P(A)+P(B)
∅∅∅ (empty set)
Separate circles that don't overlap
A′A'A′ or not(A)
P(A)+P(A′)=1P(A) + P(A') = 1P(A)+P(A′)=1
Together they cover entire sample space
Complementary must cover entire sample space
777
Only when events are mutually exclusive
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