Question

n( A U B ) = 21 , n( A ) = 10 , n( B )= 15 , Find n( A intersection B ) and n( A – B )

Answer 1

Step-by-step explanation:

n(Aunion B)=21

n(A)=10

n(B)=15

n(10intersection 15)=union - n(A-B

n(A-B)=n(-5)

21+5 26