Show that there are no idempotent commutative latin squares of order 2 , where $n\geq 1$ . [hint: the symbol 1 occurs in an even number of cells off the diagonal. if you use the hint, you need to justify why it is true.]

Afair survey question is one that does not encourage biased responses. which survey question is fair? a.) do you agree that only unethical people take credit for other people’s work? b.) have you ever taken credit for somebody else’s work? c.) have you ever engaged in unethical behavior, such as taking credit for somebody else’s work? d.) don’t you think it is unethical to take credit for somebody else’s work?