level: Level 2
Questions and Answers List
level questions: Level 2
| Question | Answer |
|---|---|
| The set consisting of all elements of the set A and set B is called the union of the sets A and B. It is denoted by A ∪ B. | Union of Sets |
| The set consisting of all elements which are in both sets A and B. It is denoted by A ∩ B | Intersection of Sets |
| The set of all elements in the universal set that are not in A. It is denoted by A’ | Complement of a Set w.r.t. Universal Set |
| The set of all elements in the set B but not in A. It is denoted by B\A | complement of a Set A w.r.t. another set B |
| |A U B| = |A|+ |B|- |A ∩B| | Inclusion- Exclusion Principle for twoSets |
| |A U B U C| = |A|+ |B|+|C|- |A ∩B|-|A ∩C| - |B ∩C|+ |A ∩ B ∩ C| | Inclusion- Exclusion Principle for three Sets |