For any event A, $P(\text{not }A)$ equals:
A$\tfrac{1}{P(A)}$
B$1 + P(A)$
C$1 - P(A)$
D$P(A) - 1$
Answer & Solution
Correct answer: C. $1 - P(A)$
The complement rule: P(not A) = 1 − P(A).
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