NIELIT 2017 July Scientist B (IT) - Section B: 20

Question

If $A$ and $B$ are two sets and $A \cup B = A ​ \cap ​ B$ then

• A. $A=\phi$
• B. $B=\phi$
• C. $A\neq B$
• D. $A=B$

Answer 1

If AUB= A intersection B, then A has to have all elements as b viceversa