Arminius
(Arminius)
September 21, 2015, 3:14pm
127
Arminius:
Two Children.
A boy and a girl are talking: “I am a boy”, says the blond child. “I’m a girl”, says the black-haired child. At least one of the children is lying.
What hair color does the girl have?
[tab]blond[/tab]
You are correct, although your username is “incorrect”.
Arminius:
Weekday.
Seven people, A, B, C, D, E, F, G discuss which weekday is today:
[list][list][list][list][list]A: “The day after tomorrow is Wednesday.”
B: “No, today is Wednesday.”
C: “You both are wrong, Wednesday is tomorrow.”
D: “Today is not Monday, not Tuesday, and not Wednesday.”
E: “I am sure that yesterday was Thursday.”
F: “No, yesterday was Tuesday.”
G: “All I know is, that yesterday was not Saturday.”[/list:u][/list:u][/list:u][/list:u][/list:u]
If only one statement is true, on which weekday was that conversation?
[tab]Sunday[/tab]
You are correct, although your username is “incorrect”.
phoneutria
(phoneutria)
September 21, 2015, 10:41pm
128
Another try at the 100 pessimists
[tab]Each sentence invalidates itself, so at any given time, only 1 sentence is incorrect. So at end 99 correct, 1 wrong.[/tab]
Innovice
(Innovice)
September 22, 2015, 1:03am
129
Arminius:
100 Pessimists.
100 pessimists have written 100 senntences on a sheet of paper. Each pessimist has written 1 sentence. The 100 sentences are numbered from 1 to 100. The first pessimist has written: “Exactly one sentence on this sheet is wrong.”. The second pessimist has written: “Exactly two sentences on this sheet are wrong.”. … And so on. Which sentences are wrong, which right?
My answer
[tab]All of them are right[/tab]
Hint
[tab]The first typo is something to pay attention to[/tab]
Another hint
[tab]I like this one a lot[/tab]
Innovice
(Innovice)
September 22, 2015, 1:32am
130
Arminius:
Five persons A, B, C, D and E chat:
[list][list][list][list][list]A: “B lies if and only if D is telling the truth.”
B: “If C is telling the truth, then either A or D is a liar.”
C: “E lies, and also A or B lie.”
D: “If B is telling the truth, then A or C too.”
E: “Among the persons A, C and D is at least one liar.”[/list:u][/list:u][/list:u][/list:u][/list:u]
Two persons are lying. Which?
[tab]You are lying.[/tab]
Rationale
[tab]A+E and B+E are two acceptable options. If only you are lying there are less liars.[/tab]
Arminius
(Arminius)
September 22, 2015, 4:50pm
132
Arminius:
100 Pessimists.
100 pessimists have written 100 senntences on a sheet of paper. Each pessimist has written 1 sentence. The 100 sentences are numbered from 1 to 100. The first pessimist has written: “Exactly one sentence on this sheet is wrong.”. The second pessimist has written: “Exactly two sentences on this sheet are wrong.”. … And so on. Which sentences are wrong, which right?
My answer
[tab]All of them are right[/tab]
Hint
[tab]The first typo is something to pay attention to[/tab]
Another hint
[tab]I like this one a lot[/tab]
Incorrect, all your solutions are incorrect.
phoneutria
(phoneutria)
September 22, 2015, 5:12pm
133
but! you said it was correct grr
Arminius
(Arminius)
September 22, 2015, 9:13pm
134
While reading I was influenced by my wishful thinking size=200 [/size], because I wished very much (too much!) that you solved the riddle. But, unfortunately, you did not solve the riddle, and I became sad.
Please try again.
phoneutria
(phoneutria)
September 22, 2015, 9:24pm
135
If a first reading fooled you, maybe I was close…
[tab]each sentence invalidates itself, therefore they are all false[/tab]
Please?
Arminius
(Arminius)
September 22, 2015, 9:29pm
136
No. Unfortunately no. Please try again.
phoneutria
(phoneutria)
September 22, 2015, 11:50pm
137
lol I was reading it wrong again
[tab]has to be 50-50[/tab]
phoneutria
(phoneutria)
September 23, 2015, 2:31am
139
i give up lol
nonono one more
[tab]dude 99 is correct[/tab]
Arminius
(Arminius)
September 23, 2015, 2:34am
140
Hey, are you sure? You give up, Phoneutria?
phoneutria
(phoneutria)
September 23, 2015, 5:30am
141
Yeah once I stopped abd thought about it out loud for a second, i felt pretty dumb for not figuring out before hehe
[tab]first I thought, there are only two possibilities. a single sentence being correcy, or none, because they are all mutually exclusive.
but then, if none are correct, dude 100 would be correct. but if dude 100 is correct, then there would be 99 wrong sentences. so he can’t be correct.
if 1 sentence is correct and 99 are wrong, dude saying that there are exactly 99 wrong sentences is correct. durrrface [/tab]
Arminius
(Arminius)
September 23, 2015, 12:43pm
142
Phoneutria, please answer my questions:
[tab]
phoneutria:
first I thought, there are only two possibilities. a single sentence being correcy, or none, because they are all mutually exclusive.
but then, if none are correct, dude 100 would be correct. but if dude 100 is correct, then there would be 99 wrong sentences. so he can’t be correct.
if 1 sentence is correct and 99 are wrong, dude saying that there are exactly 99 wrong sentences is correct. durrrface
You are still not exactly saying who is right and who is wrong and especially: why . So my questions again:
Do you mean that the sentence of the 99th person is correct? And if so: Why is the sentence of the 99th person correct? And what about the other persons? Please give a rationale why the sentence of the 99th person is correct and what about the other persons and why.[/tab]
Phoneutria you just got smacked on the hand with a ruler. You better tighten up kiddo.
Now I haven’t looked at the problem but Im pretty fuckin sure Phoneutria would solve it faster than me.
So what kind of an asshole would have the nerve to walk right in here and insult a superior mathematician? This kind baby.
phoneutria
(phoneutria)
September 23, 2015, 10:59pm
145
You are still not exactly saying who is right and who is wrong and especially: why .[/tab]