Question

can anyone solve these two problems ​

Answer 1

Answer:

3.down and 4. answer 1

Step-by-step explanation:

4. n(A) =3

n(B) =5

n(A U B) =7

so, here total numbers in A and B are 8.

but, in union only seven are there.

then in intersection automatically we notice that only 1 number is common.

n(A intersection B) is 1

3.Let A is (2, 4,6,8,0)

B is (2,6,4,8,7)

A intersection B is (2,4,6,8)

set builder form of A intersection B

(x:x is a natural even number smaller than 10)