Question

Consider A is a set and B is another set, if Au B=A n B, then

Select one:
O A = B
O A = Null
O A = U
OB = Null​

Answer 1

A = B

Explanation:

The correct option is;

A = B

Check:

A = {2,3,4}

B = {2,3,4}

Au B = A n B = {2,3,4}

A or B cannot be null.

check

A = {2,3,4}

B = {}

Au B = {2,3,4}

A n B = {}