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Apr 28, 2008 · Hey there! The upside down U or ∩ means the intersection of two sets. The intersection of two sets means that the elements of one set is common with the ... What does U or upside down U mean in math? Sep 15, 2013 1 answers Finite Math, what does this mean n(A. upside. ... Feb 27, 2008 4 answers In statistics what does U mean and the other one... Nov 11, 2008 2 answers What is the mathematical symbol that looks like... Feb 02, 2009 5 answers - read more

Our reader’s question is: “There are two sets of symbols for ‘union’ and ‘intersection’. One is the ∪ and the upside down ∩, and the other set is the - read more

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