Honestants and Swindlecants #4 (Solution)

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There are 3 men, just call them J, K, and L. And we got 2 clues here.

J said, “We are all Swindlecants." (clue #1).

K said, “Just one of us is an honest man." (clue #2).

Let’s analyze! Start from the clue #1.

It’s said that they all three are Swindlecants. It must be false because a Swindlecant never tell truth. Means that J (who said it) is a Swindlecant.

Knowing the first statement is false, we can conclude that there must be at least an honest man among them.

Go to the clue #2.

The word “at least” means it can be one or two honest men there. If there’s only one, it must be K (it’s synchronized with K’s statement telling there’s only one honest man among them). Also means that L is a Swindlecant.

If there are two, K’s statement must be true. But in fact, it’s contrary to K’s statement (there’s only one honest man). Means that K is a Swindlecant. So, it’s impossible to be so.

Finally, we can conclude that J (the first man) and L (the third man) are Swindlecants, while K (the second man) is an Honestant.

P.S.: This brain teaser I copied from Brain Teasers (http://brainden.com/logic-problems.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).