Question

!) @ if " (AUB) = 20, n(A) = 1+1CB]
) (B= 12
find n(ADB), n (A-B) and n (B-A)
b) het U= {1, 2, 3, 4, 5, 6, 7, 8 8}
* = {1,335,4} 3 = 19.34 ]
verify that (AUB) = AnB​

Answer 1

Answer:

20

Step-by-step explanation:

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

= 130 + 180 - 110

= 130 + 70

= 20