this is for holding javascript data
Rikki edited untitled.html
over 8 years ago
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here because each entrée contains either meat or fish or is vegetarian. So we
have
\(15+5+3=23.\)The rule of sum is expressed in terms
of sets:
The union between two sets is denoted as \(A\cup B\). The union means that a set of objects can happen in \(A\) or \(B\) ways or even in both ways.
The intersection of sets is denoted \(A\cap B\). This is the set of
objects that can happen in \(A\) and \(B\) ways.
If the sets \(A\) and \(B\) have no similar elements, then \(A\cap B=\left\{\right\}\) , B=\left\{\right\}\) or \(\emptyset\), which is known as the empty set.
The size of a set is
denoted \(\left|A\right|\) or \(\left|B\right|\) to show the amount of elements in set \(A\) or set \(B\).
