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| Acmlm's Board - I2 Archive - Brain Teasers - The paths and the goomba |
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Ikuzou Cheep-cheep Level: 19  Posts: 10/181 EXP: 30977 For next: 4800 Since: 05-24-05 From: Japan Since last post: 64 days Last activity: 3 days |
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| Koopa was lost inside a forest. While wandering around, he finds 2 goombas that are exactly identical, standing at the beginning of 2 paths. One leads out, but one leads into a cave, where Both of the goombas know the correct way to go. You can ask only 1 goomba a question, but only 1 question, and only yes/no Qs. But, while one goomba will tell you the truth, the other will tell you a lie. (Q: Are you a goomba?) (Truth: Yes) (Lie:No) So the question is: what does Koopa have to ask the goombas in order to know the way out? Except: + Exactly identical means that you can't tell which goomba is the truth goomba. + Yes / No Qs are only answered with yes / no. There is no other information to the answer. + And, only answered with yes or no means you can't make them an enanswerable question. example: "If you are the lieing guy, then is path 2 the wrong way?" Truth guy can't answer. + Don't post"Guess which way to go" or "I don't care". + It's not always neccesary to know who is the lieer... I hope this was not posted before... I'll delete it if I find an identical one. Have fun!  (EDIT) + I changed Yoshi to Koopa. + The question was not clear. I am very sorry for this! I forgot to say "only one". (edited by Ikuzou on 05-27-05 03:09 AM) (edited by Ikuzou on 05-27-05 03:16 AM) (edited by Ikuzou on 05-27-05 09:36 AM) (edited by Ikuzou on 05-27-05 09:50 AM) |
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RT-55J Ninji Level: 23  Posts: 70/240 EXP: 65287 For next: 2436 Since: 12-29-04 Since last post: 9 hours Last activity: 9 hours |
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| I'll ask Goomba A if the he is a Goomba. If he says no then he is the lying Goomba. Otherwise, he is the truth Goomba. I'll then ask Goomba B whether or not the left way is the correct way. If he is the lying Goomba, I will go the opposite way he suggests. If he is the truth Goomba I'll follow the path he suggests. Also, this whole thread is pointless because Yoshi can eat wigglers. |
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Ikuzou Cheep-cheep Level: 19 Posts: 12/181 EXP: 30977 For next: 4800 Since: 05-24-05 From: Japan Since last post: 64 days Last activity: 3 days |
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| It's not a pointless thread. You can figure out the path by asking only 1 question. And, you can only ask 1 question. |
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SpiderMew Rat Level: 14  Posts: 84/97 EXP: 12477 For next: 594 Since: 05-15-05 From: Another Dimension Since last post: 130 days Last activity: 130 days |
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| Theres some sort of trick to this.. in truth the goombas can controll which path is the one leading to death... and whatever one you say you choose will be leading to the death, so you ask " is that path the safe path?" then they answer ( one will say yes and the other no) Then you go down the path that you didnt choose... There for you are now safe! (edited by SpiderMew on 05-27-05 07:48 AM) |
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Teundusia Lantern Ghost Level: 41 Posts: 419/760 EXP: 449109 For next: 31036 Since: 07-31-04 Since last post: 15 hours Last activity: 14 hours |
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| All you ask them is "What path would the other goomba say?". The truth goomba will say "He would say he shows the real path" and the lying goomba would say "He would say I show the real path". The lying goomba has to say this because in reality the truth goomba would say his own path, but because the lying goomba has to lie he has to say the truth one would say the lying ones path is correct because he has to lie. The truth one says what he says because he knows the lying one would say his own path, and has to tell the truth that the lying goomba would say his own path. So whichever goomba says "He would say he shows the real path" is the truth goomba, so follow his path |
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Ikuzou Cheep-cheep Level: 19 Posts: 13/181 EXP: 30977 For next: 4800 Since: 05-24-05 From: Japan Since last post: 64 days Last activity: 3 days |
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| Thanks for answering - but I'm very sorry for this! The question was wrong.. You can only ask 1goomba. And, Only 1 question, and it has to be answered with only yes or no, and you can't tell them apart. When I say that, I mean you have to ask a question that both of them will answer the same way. Only answered with yes or no means you can't make them an enanswerable question. Example: (To Truth):"If you are the lieing goomba, then is path 1 the correct way?" Goomba: "..."Since I made things confusing, I'll give you a hint: It's not nessecary to know if the Sorry, and please, forgive me and have fun again  --------- + ----------- + ---------- RYjet911, you're kind of close... But that's not a yes/no Question... (edited by Ikuzou on 05-27-05 09:48 AM) (edited by Ikuzou on 05-27-05 09:52 AM) |
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NSNick Laidback Admin Level: 85  Posts: 2308/3875 EXP: 5895841 For next: 2699 Since: 03-15-04 From: North Side School: OSU Since last post: 9 hours Last activity: 1 hour |
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| Point to a path and ask, "if I asked the other Goomba which path would lead safely out of the forest, would he say this path?" If the answer is no, take the path you are pointing at. If it is yes, take the other path. | |||
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Ikuzou Cheep-cheep Level: 19 Posts: 14/181 EXP: 30977 For next: 4800 Since: 05-24-05 From: Japan Since last post: 64 days Last activity: 3 days |
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| You're right! Wow. You're very good at this. And, thanks for answering it even though I made many misses  |
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Teundusia Lantern Ghost Level: 41 Posts: 429/760 EXP: 449109 For next: 31036 Since: 07-31-04 Since last post: 15 hours Last activity: 14 hours |
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| The damned has to be yes/no question... |
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