Answers

2016-07-11T15:56:52+08:00
1 union:an operation for sets a and b in which a set is formed that consists of all elements that are in a or b or both.the symbol of the union is"U"and then we write aUb.sometimes union translated in the word of english"or" 2. intersection intersection of set a and b,denoted by reverse U,is the set consisting of all elements common to both a and b.
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