Question

There are 25 elements in a universal set. If n(A) = 14, n(B) = 15 and
n (A∩ B) = 6, what is the number of elements in A union B, n (A∪ B) =?

Answer 1

Answer:

n(AUB) = 23

Step-by-step explanation:

Given,

U = 25

n(A)=14

n(B)=15

n(A∩B) = 6

To find (AUB)

n(AUB) = n(A) + n(B) - n(A∩B)

= 14+15-6 = 23 (Answer)

Answer 2

Answer:23

Step-by-step explanation:14+15-6