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Question Video: Identifying the Valid Set of Pairs Which Satisfies a Given Function Mapping between Two Given Sets | Nagwa
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What is the number of ordered pair (A,B) where A and B are subsets of 1,2,3,4,5 such that neither A is a proper subset of B nor B is a proper subset
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combinatorics - How to deduce number of unordered distinct pairs using set operations and bijections - Mathematics Stack Exchange
![The number of unordered pairs (A,B) , of subsets of the set S = { 1,2,....,10 } , such that A ∩ B = ∅ and A ∪ B = S , is The number of unordered pairs (A,B) , of subsets of the set S = { 1,2,....,10 } , such that A ∩ B = ∅ and A ∪ B = S , is](https://dwes9vv9u0550.cloudfront.net/images/2375885/3247ce28-ef9d-4e2b-a524-5a0df76155d4.jpg)
The number of unordered pairs (A,B) , of subsets of the set S = { 1,2,....,10 } , such that A ∩ B = ∅ and A ∪ B = S , is
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