Reply to: IQ Test - here is another

[realityhack]

Isn't that what I said, only longer?

In essence, yes! I just put more words in there.

[RichardCranium]

If 1 says nothing, 2 deduces 1 can see headphones of both colours. 2 sees 3 has red headphones, so concludes his is the opposite colour, and correctly shouts 'blue'.

Isn't that what I said, only longer?

[realityhack]

oh right. Well done then Poirot!

Merci, monsieur. Although I still don't know if that's the absolutely correct answer, it makes sense that way, to me.

[thunderlizard]

oh right. Well done then Poirot!

[realityhack]

I think you need to tell us more about what the four people know about the set-up. For instance that 2 out of 4 of them have red phones on and that two have blue? I know you have told us that, but I'm not clear how much of what you have told us has also been told to the 4 people.

they know eveything, except what colour they are wearing.
they can only see the dudes specified i.e. they cant turn their heads

this is a pure logic puzzle. One for Columbo

how does 2 know there's somebody behind him?

See above.

[chef]

how much is the house worth they are sat in???

[thunderlizard]

If 1 says nothing, 2 deduces 1 can see headphones of both colours. 2 sees 3 has red headphones, so concludes his is the opposite colour, and correctly shouts 'blue'.

how does 2 know there's somebody behind him?

[RichardCranium]

2 shouted "Blue" because 1 didn't immediately shout "Blue".

no

Bum.

My excuse is I have filled in a permie job application this morning and now my brain is farked.

[EternalOptimist]

Is this the one about preventing the dog mating with the chicken?

well you wanted fairness

[Doggy Styles]

Agreed. The answer is 2 but 2's answer is dependent on what 3 is wearing and that could be red or blue.

Anyway, I'm not here. For reasons I can't fathom, I have a dog, a chicken and a bag of corn and a 5lb chub to catch.

Is this the one about preventing the dog mating with the chicken?

[realityhack]

If 1 says nothing, 2 deduces 1 can see headphones of both colours. 2 sees 3 has red headphones, so concludes his is the opposite colour, and correctly shouts 'blue'.

[OrangeHopper]

Agreed. The answer is 2 but 2's answer is dependent on what 3 is wearing and that could be red or blue.

Anyway, I'm not here. For reasons I can't fathom, I have a dog, a chicken and a bag of corn and a 5lb chub to catch.

[Doggy Styles]

Where does it say that 3 is wearing red other than in your diagram?

Sorry, I'm in a bad mood today and I am normally useless that these. Looks like I'm not improving with age. Anyway, I will leave you alone since I'm now off down the river.

Doesn't matter, does it? The point is that 1 says nothing, so 2 and 3 aren't the same colour. Thus 2 knows he is different to 3.

3's got no f***ing chance either, has he.

[EternalOptimist]

Where does it say that 3 is wearing red other than in your diagram?

Sorry, I'm in a bad mood today and I am normally useless that these. Looks like I'm not improving with age. Anyway, I will leave you alone since I'm now off down the river.

theres this guy right, and he has to cross the river. he has a dog, a chicken and a bag of corn
he gets his bum wet

[OrangeHopper]

Where does it say that 3 is wearing red other than in your diagram?

Sorry, I'm in a bad mood today and I am normally useless that these. Looks like I'm not improving with age. Anyway, I will leave you alone since I'm now off down the river.