Question

11. Completati astfel incat propozitia obtinută să fie adevărată:
a) An0b) AU0) AUA=
d) AnA​

Answer 1

 

$\displaystyle\bf\\a)~~~A\cap\varnothing=\varnothing\\\\b)~~~A\cup\varnothing=A\\\\c)~~~A\cup A=A\\\\d)~~~A\cap A=A$