Question

If n(A - B) = 7 and n(An B) = 5, then the
value of n(A) is
O 2
O 5
7
O 12​

Answer 1

The answer is 12

hope this helps you.

Answer 2

Answer:

12

Step-by-step explanation:

Let n(A)= X

n(A - B) = n(A) - n(A n B)

7 = x - 5

X= 12