A riddle to ponder

[--Pete]

Hi,

"what two questions can a person never answer yes to?". The clue given is "it is not a yes or no question"

If it is not a "yes or no" question, then one can never answer "yes" and make sense. If it is not necessary to make sense, then any answer is possible ("mu" anyone?).

So, any question along the lines of "What day of the week is it?" or "What's your name?" would fit the bill.

I'm not sure if we can assume that the person can't lie

If the person can lie, then the person can answer "yes" to any question, especially if "yes" is a nonsense answer.

I don't think you've got a riddle here. But as a spur for discussion it seems better than "What's green, hangs on a wall and whistles?" ;)

--Pete