WEBIntersection "Intersection" is when you must be in BOTH sets. In our case that means they play both Soccer AND Tennis... which is casey and drew. The special symbol for Intersection is an upside down "U" like this: ∩. …

WEBIn symbols, \(\forall x\in{\cal U}\,\big[x\in A\cap B \Leftrightarrow (x\in A \wedge x\in B)\big]\). The union of two sets \(A\) and \(B\), denoted \(A\cup B\), is the set that combines all the elements in \(A\) and \(B\).

WEBA useful way to remember the symbol is \(\cup\)nion. We can define the union of a collection of sets, as the set of all distinct elements that are in any of these sets. The intersection of 2 sets \(A\) and \(B\) is denoted by \(A …

WEBThe intersection of two sets is commonly represented using a Venn diagram. In a Venn diagram, a set is represented by a circle. The intersection of sets A and B in the Venn diagram below is the shaded …