You are at one end of a hall blindfolded. At the other end are Alex and Bert. You are allowed to ask any yes or no questions you want, but only one of them will respond. They are standing next to each other and their voices are identical, so you have no way of telling which one responded by sound alone.

Using as few questions as possible, find out the type of each Alex and Bert and who answered your last question.

(In reply to number of liars and knights by rerun141)

i don't know why you are saying you have to ask 6 questions half the time. and of course the answers are conditional, there are different answers for each scenario. do the work if you don't believe me. make a chart for each scenario and you will find that there is a different combination of yes/no answers to the questions i asked for each scenario.

Posted by donnmike on 2003-12-31 01:59:17