Jika diketahui n(P) = 18, n(Q) = 15, dan n(Po Q) = 8, berapakah nilai n(PU Q)? ​

N(P) = 18,

n(Q) = 15,

n(P n Q) = 8,

n ( PU Q) = (18-8) + 8 + ( 15-8)

= 10 + 8 + 7

= 25

Jadi n ( PuQ) = 25