Question

15. If A and B are finite sets, then which one of the following is the correct
equation?
(a) n(A-B) = n(A) - n(B)
(b) n(A-B) = n(B - A)
(c) n(A - B) = n(A) -- n(
AB)
(d) n(A - B) = n(B) - n(
AB)​

Answer 1

Answer:

n(A-B ) is equal to n(A) -n(B)

Step-by-step explanation:

Since we r taking common in the first bracket, therefore we separate the terms.