rookie1ja 15 Posted March 30, 2007 Report Share Posted March 30, 2007 Honestants and Swindlecants VIII. - Back to the Logic Problems Thinking about the treasure, the gringo forgot what day it was, so he asked four aborigines and got these answers: A: Yesterday was Wednesday. B: Tomorrow will be Sunday. C: Today is Friday. D: The day before yesterday was Thursday. Because everything you need to know is how many people lied, I will not tell. What day of the week was it? This old topic is locked since it was answered many times. You can check solution in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers. Honestants and Swindlecants VIII. - solution The important thing was what we did not need to know. So if we knew how many people lied we would know the answer. And one more thing – B and D said the same. If all of them lied, there would be 4 possible days to choose from (which one is not clear). If only one of them spoke the truth, it could be A or C, so 2 possible days (not clear again). If two of them were honest, it would have to be B and D saying that it was Saturday. Neither 3 nor all 4 could have been honest because of an obvious conflict. So it was Saturday. Link to post Share on other sites

Guest Posted June 10, 2007 Report Share Posted June 10, 2007 It could also be the days they don't mention, like Monday, Tuesday, etc. Or not? Two people can be liars and give the same answer Link to post Share on other sites

Guest Posted June 22, 2007 Report Share Posted June 22, 2007 Unfortunately the solution is based on the assumption that with the information given you can ALWAYS determine an EXACT answer. This is often left out on many of these logic puzzles. Otherwise, Anateresa, you could be correct in concluding that it could be any day of the week. The description of this island should append the the following phrase: After the inhabitants offer their answers you can always determine the exact truth. Link to post Share on other sites

Guest Posted June 26, 2007 Report Share Posted June 26, 2007 It is stated that in that place there are two kind of people: Honestants. -The one who said the truth. Swindlecants. -The one who tell lie. In that case there are possible answer to this. -Saturday.50% -Thursday.25% -Friday.25% And the other days cannot be considered as an answer, because it will not meer the situation of having two kind of person. They all fall to the Swindlecants person. Link to post Share on other sites

Guest Posted June 27, 2007 Report Share Posted June 27, 2007 Honestants and Swindlecants VIII. - Back to the Logic Problems Thinking about the treasure, the gringo forgot what day it was, so he asked four aborigines and got these answers: A: Yesterday was Wednesday. B: Tomorrow will be Sunday. C: Today is Friday. D: The day before yesterday was Thursday. Because everything you need to know is how many people lied, I will not tell. What day of the week was it? Because all you need to know is the number people which were lying, it stands to reason that the day with the unique number of people were lying is the correct answer If the you were told that none of them were lying it could be Monday Tuesday Wednesday or Sunday. Cannot be determined If you were told that one of them were lying it could be Thursday or Friday. Cannot be determined either. Hence the only possible solution is Saturday QED Link to post Share on other sites

Guest Posted June 28, 2007 Report Share Posted June 28, 2007 The solution given deals with Anaterasa's objection. If all of them lied it could be the days of the week not mentioned, and because it says there is a unique solution if you know how many liars there are, we know that none of the days not mentioned is correct because they don't provide a unique solution. Link to post Share on other sites

Guest Posted November 15, 2007 Report Share Posted November 15, 2007 What if A, B, and D are liars and C is telling the truth. It is the only straight forward answer. Why does saturday have to be the day just because 2 people intimated that it was? If i were on and island and asked 4 people he same question survival and instinct and logic tell me to go with the guy that is not talking in circles to me. Honest people wouldn't do that. THE DAY IS FRIDAY Link to post Share on other sites

Guest Posted November 16, 2007 Report Share Posted November 16, 2007 since the answer depends on the number of the liars we have 3 different situations: (there cannot be no liars or only one liar because we would have no solution) 1)if 2 are liars then the correct answer is Saturday (because the other two have to be telling the truth) 2)if there are 3 liars then the correct answer is either Thursday or Friday depending on who says the truth 3)if all are liars then the day is Monday, Tuesday, Wednesday or Sunday Link to post Share on other sites

Guest Posted November 21, 2007 Report Share Posted November 21, 2007 I really like these problems. XD I worked it out and came up with Saturday, which I now see was correct. Yay! Link to post Share on other sites

Guest Posted April 24, 2008 Report Share Posted April 24, 2008 What if A, B, and D are liars and C is telling the truth. It is the only straight forward answer. Why does saturday have to be the day just because 2 people intimated that it was? If i were on and island and asked 4 people he same question survival and instinct and logic tell me to go with the guy that is not talking in circles to me. Honest people wouldn't do that. THE DAY IS FRIDAY This puzzle is real good. I got the right answer but for the wrong reason until I read some of the other posts. The key is the problem states: "Because everything you need to know is how many people lied, I will not tell. What day of the week was it?" If A B and D are liars then the number of liars (the only thing you need to know to get the right answer) is 3. But if we know there are three liars, there are two possible solutions. If A B and D are liars than the answer would be Friday. But B C and D could also be liars, making the answer Thursday. So there can't be 3 liars, or we would need more information to determine which 3 where the liars and the statement specifically says we only need the number of liars to get the correct answer. So, given only the number of liars and the information in the problem the answer has to be Saturday, because it is the result of 2 people being liars producing a unique result, while all other counts for liars would produce non-unique answers. Link to post Share on other sites

Guest Posted October 25, 2008 Report Share Posted October 25, 2008 I'm confused. If they all lied, couldn't it be tuesday or something? Link to post Share on other sites

Guest Posted November 12, 2008 Report Share Posted November 12, 2008 I think I might know the answer.... based on the fact that 2 of them agreed on one particular day. Friday. Link to post Share on other sites

Guest Posted November 12, 2008 Report Share Posted November 12, 2008 haha... i messed up lol... i knew that 2 of them agreed on one day and then I went and mixed it up, coming up with a wrong answer lol. Saturday... silly me Link to post Share on other sites

Guest Posted November 12, 2008 Report Share Posted November 12, 2008 I agree that there were 3 liers, so it was Friday. A "stright' question is supposed to get a "stright" answer. Link to post Share on other sites

Guest Posted April 21, 2009 Report Share Posted April 21, 2009 Honestants and Swindlecants VIII. - Back to the Logic Problems Thinking about the treasure, the gringo forgot what day it was, so he asked four aborigines and got these answers: A: Yesterday was Wednesday. B: Tomorrow will be Sunday. C: Today is Friday. D: The day before yesterday was Thursday. Because everything you need to know is how many people lied, I will not tell. What day of the week was it? Honestants and Swindlecants VIII. - solution The important thing was what we did not need to know. So if we knew how many people lied we would know the answer. And one more thing – B and D said the same. If all of them lied, there would be 4 possible days to choose from (which one is not clear). If only one of them spoke the truth, it could be A or C, so 2 possible days (not clear again). If two of them were honest, it would have to be B and D saying that it was Saturday. Neither 3 nor all 4 could have been honest because of an obvious conflict. So it was Saturday. This, as many others, is probably misquoted, as it is a total logical falacy. It could be any day of the week, as the only thing that is told about how many liars there are is that they won't tell how many there are! As there are obviously not enough of them to cover every day of the week, there is no way of telling if any are telling the truth. Two people are capable of lying and saying that it is one certain day of the week in different ways. Percentages of people who would be lying in the case that one particular day was the truth is not the way to solve a logic problem. If you had 99 swindlecants and 1 honestant, the only honest answer you would get would be 1% of the whole, and thus it would have to be false? NO!! You would have to use logical bridges in order to retrieve through double negativity or complete positive answers. If you were to rephrase this question to: If someone here were telling the truth- or had one person covering each day of the week- and had at least two of them comment on whether or not another was telling the truth, you could find the answer. Under these conditions, however, there is no concrete answer. Link to post Share on other sites

Guest Posted May 11, 2010 Report Share Posted May 11, 2010 It could also be the days they don't mention, like Monday, Tuesday, etc. Or not? Two people can be liars and give the same answer i thought that at first, but then realised that thats what it means in the ifrst instance - if all 4 had lied, then because two of them said the same thing, there are 3 answers provided that are incorrect. that leaves 4 possible actual days of the week - the ones that none of the aboriginals said it was this is what you were saying - the days they dont mention Link to post Share on other sites

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