Thanks, I'd like to know their answer.
Had one professor who would intentionally give an incorrect answer for two reasons. First, to see if anybody would challenge his answer. It would not make him upset if you challenged him. Second, he would see if you could prove your answer, even if he knew you had the correct answer. It was a good way of making you study the material more thoroughly.
Also think he did it to teach his students that teachers are not infallible. They can, and do, make mistakes. Some teachers take offense to students who question what the teachers are telling the students, and it can be unwise to go against them if you want to pass the course. This is just like real life.
But he wanted us to find answers for ourselves, not just regurgitate 'facts' from books or lectures.
It was from him that I learned how to truly study and learn from tests and quizzes. Do not only know which answer is correct, but why it is correct, and why each of the wrong answers are incorrect. Make up your own test as you study your material, and make it tough. Write out the questions, then go over the material until you can get 100% on your test. If you do it right, you will come up with many of the questions that are on your final exam. Maybe not word for word, but close enough that you will know the answers.
Gordon
Just when you finally think you have learned it all, that is when you learn that you don't know anything yet.
