Question

ii) If A = {4, 5, 6); B = {7, 8), then show that A U B = B UA.
​

Answer 1

Answer:

On the LHS, we have:

AUB = {4,5,6,7,8}

On the RHS, we have:

BUA = {4,5,6,7,8}

Here, LHS=RHS

Hence Proved.

Answer 2

Answer:

the answer is YES

Step-by-step explanation:

A = {4,5,6}

B = {7,8}

 

A U B = {4,5,6} U {7,8} = {4,5,6,7,8}

B U A = {7,8} U {4,5,6} = {7,8,4,5,6} = {4,5,6,7,8}

So A U B = B U A