LiarsLogic puzzles require you to think. You will have to be logical in your reasoning.
Twelve men are in a room, some of them always tell lies, while the others always tell the truth.
The first man says: "None of us is a truthteller."
The second man says: "At most one of us is a truthteller."
The third man says: "At most two of us are truthtellers."
The twelfth and last man says: "At most eleven of us are truthtellers."
Who are the liars?
HintIt's OK to use trial and error, however, there might exist better methods.
AnswerIf there are exactly N liars, then the last N men are truthtellers, leaving the first (12-N) men to be liars.
Therefore, N=12-N, N=6. The first 6 men are liars, and the last 6 men are truthtellers.
See another brain teaser just like this one...
Or, just get a random brain teaser
If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.
Back to Top