Rikki edited p_To_clear_this_up__.html  over 8 years ago

Commit id: 241e56019bc75dcf9b42ad65cff91bc3224aedb1

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To clear this up, lets look at an example.  Let set \(A\)=\(\left\{10,11,12\right\}\) and set data-equation="B=\left\{11,12,13,14\right\}">\(B=\left\{11,12,13,14\right\}\).

 data-equation="B=\left\{11,12,13,14\right\}">\(B=\left\{11,12,13,14\right\}\).

\(undefined\) (Notice each element is only listed once even though each set shares common elements)
\(undefined\) (Notice both sets share these elements)
\(\left|A\right|=3\) and \(undefined\)