Question

3) If n (A) = 15, n (AB) =29, n(AB) = 7 then n(B) = ?​

Answer 1

Answer:

good evening ..........

Answer 2

Step-by-step explanation:

n(AUB) = n(A)-n(AnB)+n(B)

29 =15-7+n(B)

n(B)=21

hope this helps