Question

Sa se detremine multimile X si Y stiind ca:
a)XUY={1,2,3,4,5}
b){3,5} U intors spre drepata Y
c){1} U intorrs Y=multime vida
d){2,4} U intorsX≠Ф
e) X U intorsY=Ф

Answer 1

X={1,2,4}
Y={3,5}

................

Answer 2

{3,5}intors⇒Y={3,5}
{1}intorsY=Ф⇒X={1}
X={1,2,4}
Y={3,5}