Question

A={all primes less than 20}
B={all whole numbers less than 10}then find
(1)A-(A intersection B) (2) (A-B)intersection(B-A)​

Answer 1

Answer:

A = {2, 3, 5, 7, 11, 13,17,19}

B = {0,1,2,3,4,5,6,7,8,9}

1. A-(A intersection B) = {11,13,17,19}

A intersection B = {2,3,5,7}

2. (A-B) intersection (B-A) = null set = phi

(A-B) = {11,13,17,19}

(B-A) = {0,1,4,6,8,9}