## MultisetsA multiset is an unordered collection of elements, in which the multiplicity of an element may be one or more than one or zero. The multiplicity of an element is the number of times the element repeated in the multiset. In other words, we can say that an element can appear any number of times in a set. ## Example:## Operations on Multisets
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## Example:The cardinality of the multiset A is 5. ## Ordered SetIt is defined as the ordered collection of distinct objects. ## Example:## Ordered PairsAn Ordered Pair consists of two elements such that one of them is designated as the first member and other as the second member. (a, b) and (b, a) are two different ordered pair. An ordered triple can also be written regarding an ordered pair as {(a, b) c} An ordered Quadrable is an ordered pair {(((a, b), c) d)} with the first element as ordered triple. An ordered n-tuple is an ordered pair where the first component is an ordered (n - 1) tuples, and the n ## Example:Next TopicInclusion-Exclusion Principle |