Question

If A={x:x is a natural number less than 11} B={x:x is a prime number less than 20}, then find A-B and B-A.​

Answer 1

Answer:

A={x:x is a natural number less than 11}

A={1,2,3,4,5,6,7,8,9,10}

B={x:x is a prime number less than 20}

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

A-B= {1,4,6,8,9,10}

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