Question

If b union a then a intersection b =

Answer 1

Answer:

a=b

Step-by-step explanation:

Let x E A.

Then x E AUB.

Since AUB = A ∩ B,

XEA ∩ B.

So x E B.

If x E A, then x E B

i.e. if an elements belongs to set A, then it must belong to set B also

Therefore, A is subset of B.

similarly ,

B is subset of A

Hence A=B