Question

Se dau mulțimile: A={ a,b,c,d } si B={ a,c,d,e,f}.
Daca ( A intersectat B ) intersectat N= { 5,6,7 } si a

Answer 1

 [tex] (A\,\cap\,B)\cap{N} = \{a;c;d\}\cap\{N\}=\{5;6;7;\}\\ \rightarrow\;\;\;a=5\;;\;c=6\;\,si\,\;d=7[/tex]