Question

please answer these five questions​

Answer 1

Answer:

1.A is proper subset to Be then A union B= B.

2.A is subset or equal to B then A-B= 0(zero).

3.singleton set.

4.n(A union B) = 80.

5.n(B) =210.

Step-by-step explanation:

4.n(A)+n(B)=n(A union B) +n(A intersection B).

50+35= n(A union B) +5

85=n(A Union B) +5

n(A union B) = 85-5

n(A Union B) = 80.