P and Q are two non-empty sets. Given: n(P) = 12, n(Q) = 6 and n (P U Q) = 10. Then n (P ∩ Q) is

P and Q are two non-empty sets. Given: n(P) = 12, n(Q) = 6 and n (P U

1.	P and Q are two non-empty sets. Given: n(P) = 12, n(Q) = 6 and n (P U Q) = 10. Then n (P ∩ Q) is
A.	8
B.	9
C.	7
Answer» B. 9