Question

If A={x:x is a factor of 42}; B={x:x is a factor of 54}.
Then find AUB,A^B,A-B and B-A ​

Answer 1

Step-by-step explanation:

A & B in roster form

A= {1, 2, 3, 6, 7, 14,21,42}

B={1,2,3,6,9,18,27,54}

1. AUB

={1,2,3,6,7,9,14,18,21,27,42,54}

2. A^B

={1,2,3,6}

3.A-B

={7,14,21,42}

4.B-A

={9,18,27,54}