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Logic puzzle #1! (Off-Topic)
Posted:
Sun Oct 05, 2014 10:54 amby Pineapples Studio
Bob and Rob are identical twins. They look alike in every measurable way, but Bob lies on Monday, Tuesday, and Wednesday, whereas Rob lies on Thursday, Friday, and Saturday. Both of them tell the truth on Sunday.
You come upon Bob and Rob one day and introduce yourself to them.
One twin (twin A) introduces himself as Rob and warns that he will lie tomorrow.
The other one (twin B) looks up in surprise and tells you that he is Rob. He also says that he lied yesterday and that he will also lie tomorrow.
Who is Bob, who is Rob, and what day of the week is it?
Re: Logic puzzle #1! (Off-Topic)
Posted:
Sun Oct 05, 2014 2:22 pmby eknbb2
evil-pineapples wrote:Bob and Rob are identical twins. They look alike in every measurable way, but Bob lies on Monday, Tuesday, and Wednesday, whereas Rob lies on Thursday, Friday, and Saturday. Both of them tell the truth on Sunday.
You come upon Bob and Rob one day and introduce yourself to them.
One twin (twin A) introduces himself as Rob and warns that he will lie tomorrow.
The other one (twin B) looks up in surprise and tells you that he is Rob. He also says that he lied yesterday and that he will also lie tomorrow.
Who is Bob, who is Rob, and what day of the week is it?
Twin A -> Rob, Wednesday.
Re: Logic puzzle #1! (Off-Topic)
Posted:
Sun Oct 05, 2014 10:17 pmby Pineapples Studio
Correct.
Re: Logic puzzle #1! (Off-Topic)
Posted:
Mon Oct 06, 2014 1:38 amby angelnomiluvr
eknbb2 wrote:evil-pineapples wrote:Bob and Rob are identical twins. They look alike in every measurable way, but Bob lies on Monday, Tuesday, and Wednesday, whereas Rob lies on Thursday, Friday, and Saturday. Both of them tell the truth on Sunday.
You come upon Bob and Rob one day and introduce yourself to them.
One twin (twin A) introduces himself as Rob and warns that he will lie tomorrow.
The other one (twin B) looks up in surprise and tells you that he is Rob. He also says that he lied yesterday and that he will also lie tomorrow.
Who is Bob, who is Rob, and what day of the week is it?
Twin A -> Rob, Wednesday.
Please explain how you figured the right answer?
Re: Logic puzzle #1! (Off-Topic)
Posted:
Mon Oct 06, 2014 1:57 amby Pineapples Studio
Twin B is obviously lying, since neither person lies, tells the truth, and lies on three consecutive days.
Therefore, Twin A must be telling the truth, since both twins cannot lie on the same day.
Since it is not Sunday (since B is lying), it can only be Wednesday.
Twin A must be Rob, and twin B must be Bob.
Re: Logic puzzle #1! (Off-Topic)
Posted:
Mon Oct 06, 2014 2:11 amby angelnomiluvr
evil-pineapples wrote:Twin B is obviously lying, since neither person lies, tells the truth, and lies on three consecutive days.
Therefore, Twin A must be telling the truth, since both twins cannot lie on the same day.
Since it is not Sunday (since B is lying), it can only be Wednesday.
Twin A must be Rob, and twin B must be Bob.
Thank you. I did enjoy many of these types of puzzles, and figured out many, but maybe my brain was just too slow today
Re: Logic puzzle #1! (Off-Topic)
Posted:
Mon Oct 06, 2014 2:15 amby Pineapples Studio
They're not easy. I can post more in a few days if people are interested.
Re: Logic puzzle #1! (Off-Topic)
Posted:
Mon Oct 06, 2014 2:57 amby angelnomiluvr
evil-pineapples wrote:They're not easy. I can post more in a few days if people are interested.
I wouldn't mind them, it's a nice change from talking non-stop porn. And this is the general discussion forum