Sets

Worked examples (11)extended set

• 1Operations inside a numerical universal set
• 2Set-builder notation with inequalities and primes
• 3The empty set and counting a complement
• 4Describing regions of a three-set diagram
• 5Using the inclusion–exclusion formula
• 6Verifying De Morgan's law with numbers
• 7Basic union and intersection
• 8Reading elements from a Venn diagram
• 9Naming shaded regions of a three-set diagram
• 10Testing a claim about two set expressions
• 11Shading the region for a set expression

Worked examples (11)extended set

• 1Two sets with a 'neither' region
• 2Finding the three-set overlap from a total
• 3Probability from a completed three-set diagram
• 4Algebraic regions solved from the total
• 5Three-set survey with a 'none' region
• 6Counting a compound region
• 7Placing elements in a two-set diagram
• 8Subset and disjoint sets with missing counts
• 9Solving for x from equal set sizes
• 10Spotting misplaced elements in a three-set diagram
• 11Shading a compound region and using its count