Chapter 12 · Class 6 ICSE · Formula Sheet
Sets Formulas — Class 6 ICSE
Represent sets using roster and set-builder notation; identify types of sets and perform basic operations.
Key Formulas
Empty Set
\emptyset \text{ or } \{\}
Subset
A \subseteq B \text{ if every element of } A \text{ is in } B
Union
A \cup B = \{x : x \in A \text{ or } x \in B\}
Intersection
A \cap B = \{x : x \in A \text{ and } x \in B\}
Worked Examples
1Using: Application
Apply the key formula from this topic to a sample problem.
Step 1: Identify the formula.
Step 2: Substitute the values.
Step 3: Simplify to get the answer.
Answer: See solution above
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