Question

Let A={x:x is a prime number. <10}
B={1,2,3,4}
1) write A in tabular form
2) find (A–B)U(B–A)​

Answer 1

A = {2,3,5,7}

B = {1,2,3,4}

A-B = {2,3,5,7} - {1,2,3,4} = {5,7}

B-A = {1,2,3,4} - {2,3,5,7} = {1,4}

(A-B) U (B-A) = {5,7} U {1,4} = {1,4,5,7}

PLS FOLLOW ME