Question

pls answer....... emergency​

Answer 1

Step-by-step explanation:

1. n (A) = 5 & n (B) = 4

A - B = 5 - 4

= 1

B - A = 4 - 5

= - 1

Therefore, A - B not equal to B - A

2. (A Union B) = {1,2,3,5,7,9}

(A Intersection B) = {3,5,7}

n (A Union B) = 6

n ( A Intersection B) = 3

(A Union B) - (A Intersection B) = 6 - 3

= 3