Question

Q.8) If n(A) = 5, n(AUB) = 9, n(A 1 point
n B) = 2, find n(B) *
O A) 2
O B) 7
OC) 6
D) 4​

Answer 1

Answer:

D). 4.

okay.

n(AUB) = n(A) +n(B) -n(AnB). working formula rules.