Identities (Grade 12 NSC Matric Mathematics): Flashcards

Outcome of one event doesn't affect outcome of another

Outcome of one event influences probability of another

Events that cannot happen at the same time

$P(A \text{ or } B) = P(A) + P(B) - P(A \text{ and } B)$

$P(A \text{ or } B) = P(A) + P(B)$

$P(\text{not } A) = 1 - P(A)$

$P(A \text{ and } B) = P(A) \times P(B)$

Check if $P(A \text{ and } B) = P(A) \times P(B)$

Check if $P(A \text{ and } B) = 0$

With: independent; Without: dependent