Question

if n(A)=20 & n(B)=16then find n (AUB)= 30, find (AnB)​

Answer 1

Answer:

Step-by-step explanation:

Answer:

n(A∪B)=n(A)+n(B)−n(A∩B)

:36=20+28-n(A∩B)

:36=48-(A∩B)

:A∩B)=48-36=12

Answer 2

Step-by-step explanation:

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

30 = 20 +16 - n(AnB)

30= 36 - n(AnB)

n(AnB) =36-30

n(AnB)=6