Question

Find the intersection. {1,2,3,5} n {0,2,5,7}

Answer 1

the intersection is simply the common data values in each set, in this case

`\bf \{1,\stackrel{\downarrow }{2},3,\stackrel{\downarrow }{5}\} \cap \{0,\stackrel{\downarrow }{2},\stackrel{\downarrow }{5},7\}~\hspace{5em}\implies \{2,5\}`