Question

Complete the following activity and choose the correct option for the empty boxes.​

Answer 1

Answer:

n(B)

and final answer is 16 i.e. n( A U B) =16

Answer 2

Answer:

n(AUB)=n(A)+(b)-n(AnB)

n(AUB)=7+13-4

n(AUB)=(n)