Question

For any two sets $A$ and $B$, are $A\times B$ and $B\times A$ equal ?

• A. Yes
• B. No
• C. Depends on $A$
• D. Depends on $B$

Answer 1

Answer: (B)

No

No $A\times B$ and $B\times A$ are not equal.

They are only equal when $A=B$ or $A=\varphi$ or $B=\varphi$