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There are 3 people, A, B, and C. Their names are Truth, Liar, and Midair. Truth alway tells people truths; Liar tells people nothing but lies; Midair sometimes tells people turth, and sometimes lies to people. We know A, B, and C are them, but we don't know which is which.
So, a police asked A "Who is B?". A said "B is Truth."; then the police asked B"Are you Turth?", B said "No, I am Liar."; At last, the police asked C"Who on earth is B", C said "B is Liar.". Based on what they said, can you tell which is Truth, which is Liar, and which is Midair?
I can give you guys 3 alternative answers, so you can choose:
(1) A is Midair, B is Liar, C is Truth;
(2) A is Midair, B is Truth, C is Liar;
(3) A is Truth, B is Liar, C is Midair.
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Post comment Comment (6 replies)
- Reply Lilyzbz
- Ha！Interesting！Are you sure? You can think it through once again, and I will reveal the answer tomorrom night.
sunnyv: The right answer should be (2) A is Midair, B is Truth, C is Liar.
- Reply lovingfun
- I think, the correct answer should be (1):
B is a liar, even if he tells the truth, no one would like believe it .
C is a truth, for he just tell truth.
A is a midair, he sometimes tell the turth, but sometimes tell a lie.
- Reply Lilyzbz
- First, thanks for your response. The best answer should be (1). Here is why: according to what A said, we can deduce that A is definite not Truth,so A is either Liar or Midair; B said itself was Liar, so B is not Turth, then C must be Truth; C said B was Liar, so B is Liar; then we can easily tell that A is Midair. Here is one thing I cannot get. Since B is Liar, why did it tell the police the truth this time? Due to too much pressure?
- Reply Lilyzbz
- I agree with you. Can you tell me how you deduce it? I mean the whole deductive process.
lovingfun: I think, the correct answer should be (1):
B is a liar, even if he tells the truth, no one would like believe it .
C is a truth, for he just tell trut ...
- Reply lovingfun
- First, we suppose A is a liar, then we will find that others will be controdict, so , it maybe a liar or a midair. There is a condition, that is, truth never tell lies, so there only one possible anwer. If b is a truth, according what C said, he must not be a liar, but maybe C tell lies. Then there is another condition, liar tells nothing but lies, even if liar tells the truth, he will regard as a liar, it is upon a liar's nature. So, we can get a conculsion that A is a midair, B is a liar, C is a truth. Then everthing is ok.
Lilyzbz: I agree with you. Can you tell me how you deduce it? I mean the whole deductive process.
But I think that this test has some broblem in Theory of dilemma inference， in other words, I don't think it is very perfect in logical.
Anyway, it is a good way to make us thinking hard.
