Question

Please answer this question quick to get 10 ponits!!​

Answer 1

Step-by-step explanation:

A={3,5,7,9}

B={4,5,6,7,8}

Then we should find n(A intersection B union A)

First

A intersection B

{3,5,7,9} intersection {4,5,6,7,8}

{5}

Then A intersection B union A

{5}union{3,5,7,9}

{3,5,7,9}

Then n(A intersection B union A)

n(3,5,7,9)

No.of elements in this set is

n(3,5,7,9)=4

Answer 2

Step-by-step explanation:

i hope it's helpful to u. ❤