Question

Given U={ 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}
Given the cardinality of each set
1. n(A)
2.n(D)
How many subsets are there each set
1.A
2.D
Find the Following
1. A U D
2.A Π D​

Answer 1

Answer:

1.) A

2.) A

3.) B

pls give me brainlist answer pls