Probability (HSC SSCE Mathematics Advanced): Flashcards

Visual tool showing sets and relationships using circles

Rectangle containing all possible elements

Intersection - elements in both sets

Union - elements in either set or both

Complement - elements not in A but in universal set

Number of elements it contains

$|A \cup B| = |A| + |B| - |A \cap B|$

To avoid double-counting shared elements

AND - element must be in both sets

OR - element in either set or both