Answers

2016-03-27T08:25:27+05:30
For two sets A and B, the number of elements in the union is denoted by,

|AuB| =|A| + |B| - |AnB|.
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  • Brainly User
2016-03-27T09:03:05+05:30
The Enclusion exclusion principle is 

 |AuB| =|A| + |B| - |AnB|
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