P and Q are two sets.
n(P) = 9 and n(Q) = 5
Find the value of n(PU Q) when n(PnQ) = 3

Ответ:

11

Пошаговое объяснение:

[tex]n(P \cup Q) = n(P) + n(Q) - n(P \cap Q) = 9 + 5 - 3 = 11[/tex]