Probability Identities (Grade 10 NSC Matric Mathematics): Quizzes

$1$

Set of all possible outcomes

$P(A \cup B) = P(A) + P(B) - P(A \cap B)$

To avoid double-counting the overlap

Event $A$ or $B$ (or both) occurring

Outcomes in both $A$ and $B$

$\frac{\text{Favourable outcomes}}{\text{Total outcomes}}$

Between $0$ and $1$

$\frac{6}{10}$

Not subtracting the intersection