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# Complement Rule for Probability

## If P(A) is is the probability that event A happens then the probability that event A doesn't happen is 1-P(A).

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## Complement Rule for Probability (A-2)

by LISD Secondary Math //at grade
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## Introduction to the Complement Rule for Probability

Determine the probability of complementary events.
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## Complement Rule for Probability

Discover how to use the Complement Rule to calculate an unknown complement when a known complement is given.
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