## Search found 8 matches

Mon Nov 29, 2010 5:02 am UTC
Replies: 98
Views: 28535

Sounds like Mr. Munroe saw The Social Network.
Sun Oct 10, 2010 12:38 am UTC
Forum: Logic Puzzles
Topic: Relatively prime
Replies: 21
Views: 3959

### Re: Relatively prime

This took about 5 seconds of though.
Spoiler:
n and n+1 are always relatively prime, so in fact there are at least 6 such pairs between (inclusive) x and x+7 or 5 if exclusive
Sun Oct 10, 2010 12:36 am UTC
Forum: Logic Puzzles
Topic: Old Wine in a Not-so-new Bottle
Replies: 11
Views: 4144

### Re: Old Wine in a Not-so-new Bottle

Well either this is a joke of some sort (Bottle of wine means just the bottle? or vice-versa) or the answer is easy...
Spoiler:
Wine = Bottle + 9, Bottle+Wine=10. Bottle+Bottle+9=10, Bottle = \$.50
Wed Sep 01, 2010 4:16 pm UTC
Forum: Logic Puzzles
Topic: Milk and Coffee
Replies: 10
Views: 4288

### Re: Milk and Coffee

Right. That's what I was looking for (Although the first answer was also correct if you leave the milk out).
Wed Sep 01, 2010 6:51 am UTC
Forum: Logic Puzzles
Topic: Milk and Coffee
Replies: 10
Views: 4288

### Re: Milk and Coffee

If you leave the milk out, sure. But who wants to leave the milk out? ALSO: if you leave the milk out, it doesn't matter, the result is the same. I think. For convenience, let's assume that you have one part milk for four parts coffee. The coffee is brewed at 212 degrees F, the milk is chilled ...
Wed Sep 01, 2010 6:00 am UTC
Forum: Logic Puzzles
Topic: Generalized handshakes
Replies: 3
Views: 2139

### Re: Generalized handshakes

Yes. Can you prove generalization for N?
Wed Sep 01, 2010 5:47 am UTC
Forum: Logic Puzzles
Topic: Generalized handshakes
Replies: 3
Views: 2139

### Generalized handshakes

A couple has N other couples over. When everyone gets ready to leave, some people shake hands, but obviously not with themselves, and also not with their partner. The male host asks everyone how many hands they shook, and each answers differently from each other and from the male hosts total. That i...
Wed Sep 01, 2010 5:25 am UTC
Forum: Logic Puzzles
Topic: Milk and Coffee
Replies: 10
Views: 4288

### Milk and Coffee

A fairly simple problem. You brew a cup of coffee at boiling temperature. You have milk chilled to, say, 36 degrees. The phone rings, and you know you will have to be on the phone for a substantial amount of time, not enough for the coffee to cool to room temperature, but certainly enough to bring i...