Question

If n(A) = 7. 1(B) = 13.
n(An B) = 4, then n(A U B} = ?​

Answer 1

Answer:

given in explanation section

Step-by-step explanation:

according to the equation

n(A n B)=n(A)+n(B)-n(A U B)

given that

n(A)=7

n(B)=13

n(A n B)=4

then n(A U B) is

n(A U B)=7+13-4

n(A U B)=16