Kak tolong kerjain no 2,pake cara,besok di kumpul​

n(A) = 40

n(B) = 25

n (A u B) = 50

n ( A n B) =n (A) + n (B) – n ( A u B)

40+25-50

=65-50 =15

Jadi n (A n B) = 15

Semoga membantu!

Jawab:

N(B)=40

N(A U B )=50

= N( A U B ) + N(B)= 50 + 40 =90

MAAF KALO SALAH