Answered

universal=(1,2,3,4,...20), X=(1,2,3,4,5), Y=(2,3,5,8,12)
(X U Y)

ʼ

=

Sagot :

(X U Y) = {1,2,3,4,5,8,12}

(X U Y)' = {6,7,9,10,11,13,14,15,16,17,18,19,20}