Question

fill with cardinal number
1.n(A)=30,n(B)=45n(AuB)=65,n(AnB)=?,n(A-B)=?,n(B-A)=?​

Answer 1

Step-by-step explanation:

n(A)=30

n(B)=45

n(AuB)=65

(AnB)=30+45-65= 75-65= 15

n(A-B)=-15

n(B-A)=15

Answer 2

Question:

If n(A)=30, n(B)=45, n(AUB)=65, find i)n(AnB) ii)n(A-B) iii)n(B-A)

10,20,30

10,15,10

20,10,15

10,20,35

Answer: Given in attachment.