Question

Help please! Thank you! :)

Answer 1

a.
`A\cap B=\{6, 11\}`

Explanation:

U = {3, 4, 6, 7, 9, 11, 12, 15}

A = {3, 6, 11, 12}

B = {6, 7, 11, 15}

Since, 6 and 11 are common elements in sets A and B. Therefore ,

`A\cap B=\{6, 11\}`