## Search found 24 matches

Tue Sep 24, 2013 8:45 am UTC
Forum: Logic Puzzles
Topic: Sum and Product Game
Replies: 37
Views: 11980

### Re: Sum and Product Game

Assumptions: - The restrictions from the other thread are still valid and we have integers x >= 2 and y >= 2, x can equal y, Alice knows x+y and Bob knows x*y. - Bob is able to talk to Alice instead of just listening - If Eve were given the product along with the conversation she would have to be ab...
Mon Feb 11, 2013 10:29 am UTC
Forum: Logic Puzzles
Topic: Tea or Coffee
Replies: 13
Views: 6304

### Re: Tea or Coffee

jestingrabbit wrote:My first guess would be
Spoiler:
equal amounts of coffee in the coffee cup and tea in the tea cup. Both cups end up with the same amount of fluid in them, and we started with equal amounts of the two fluids, so they must have swapped equal amounts.
That is indeed the correct answer.
Fri Feb 01, 2013 7:19 pm UTC
Forum: Logic Puzzles
Topic: Flow
Replies: 17
Views: 12563

### Re: Flow

No problem. Here we go: It's been established that uniqueness doesn't hold for every Flow puzzle, so to show off corners deductions, I'll use a Numberlink instead. Here's the first few steps I took in solving this puzzle, which is quite susceptible to corners logic. numberlink.PNG 1...
Mon Jan 28, 2013 6:22 am UTC
Forum: Logic Puzzles
Topic: Flow
Replies: 17
Views: 12563

### Re: Flow

Many Flow puzzles have multiple solutions (particularly the earlier ones), but most of them involve the line wiggling around next to itself to fill up space. The game doesn't actually say this, but every board has a solution with no monochromatic 2x2 squares which is pretty helpful for reasoning abo...
Wed Dec 05, 2012 8:26 am UTC
Topic: 1143:"Location"
Replies: 84
Views: 50225

### Re: 1143:"Location"

Lukeonia1 wrote:
Jamaican Castle wrote:next to a growing Tiberium field (although that doesn't usually attract tourists...)

This is what I thought as well... And it's probably bad that this comic is the first I've heard of this "Ingress" game.

Back under my rock I go?

No, the rock is for people who have heard of it.
Wed Dec 05, 2012 6:35 am UTC
Forum: Coding
Topic: C++ Memory Issue
Replies: 8
Views: 2614

### Re: C++ Memory Issue

Try replacing the queue with an array and manually shifting all the elements toward the front of the array whenever you pop a prime. That should prevent any memory issue I can imagine there. Is it possible that message means the whole system ran into a memory cap? Run a hello world and see if that f...
Fri Sep 07, 2012 7:02 am UTC
Forum: Logic Puzzles
Topic: Pennies in Boxes
Replies: 86
Views: 53252

### Re: Pennies in Boxes

Given the lateral thinking disclaimer and the fact that the OP doesn't explicitly say so: 1) Are we required to get the pennies to the bank in an undamaged state? Or would a solution like melting the boxes down, centrifuging the results, then selling the resulting metal work? 2) Are we limited to to...
Wed Aug 29, 2012 6:03 am UTC
Topic: 1101: "Sketchiness"
Replies: 168
Views: 30109

### Re: 1101: "Sketchiness"

I wonder if Randall's been playing some Starcraft lately.
Thu Aug 16, 2012 10:24 pm UTC
Forum: Logic Puzzles
Topic: My write-up of the "Blue Eyes" solution (SPOILER A
Replies: 1368
Views: 424393

### Re: My write-up of the "Blue Eyes" solution (SPOILER A

(An easier to read version of the reasoning below can be found at http://pastebin.com/NxRnXeYQ. I'd really recommend looking at that version instead) Adam, Barb, Christina, and Dave are on the island before the Guru has made any statement. Adam can see that everyone else has blue eyes. Adam knows th...
Mon Aug 13, 2012 6:45 am UTC
Forum: Logic Puzzles
Topic: Tents & Trees
Replies: 21
Views: 6027

### Re: Tents & Trees

If anyone's interested in more, the Tents app in Simon Tatham's puzzle pack is pretty similar to this one. Some of the rules are different (the trees are pre-placed and can be adjacent and there are no sections), but the process of solving them is basically the same.
Fri Jun 22, 2012 6:28 am UTC
Forum: Mathematics
Topic: Question about random number generation
Replies: 28
Views: 8223

### Re: Question about random number generation

Edit: Looks like you understand already, but I had this typed up so I'll throw it in there. If you roll the dice (call the rand5 function) n times you get 5^n permutations of rolls, i.e. states. What you want to do is divide those states up in such a way that an equal number of states correspond to ...
Tue Jun 05, 2012 6:30 am UTC
Topic: 1064: "Front Door"
Replies: 80
Views: 21408

### Re: 1064: "Front Door"

I've recently become afraid of the dark again once I started imagining that weeping angels were right behind me. I was reading this thread thinking how silly it is that people are honestly afraid, even on a subconscious level, that someone is going to sneak up on them as they approach their own dam...
Mon Jun 04, 2012 8:43 am UTC
Topic: 1064: "Front Door"
Replies: 80
Views: 21408

### Re: 1064: "Front Door"

I've recently become afraid of the dark again once I started imagining that weeping angels were right behind me. I was reading this thread thinking how silly it is that people are honestly afraid, even on a subconscious level, that someone is going to sneak up on them as they approach their own dam...
Mon Jun 04, 2012 6:07 am UTC
Topic: 1064: "Front Door"
Replies: 80
Views: 21408

### Re: 1064: "Front Door"

I've recently become afraid of the dark again once I started imagining that weeping angels were right behind me.
Thu Sep 29, 2011 8:45 pm UTC
Forum: Logic Puzzles
Topic: Solve this! (A mathemagical game.)
Replies: 62
Views: 10951

### Re: Solve this! (A mathemagical game.)

When two people want to share a cake equally, one strategy is for the first person to cut the cake in two and the second person to choose who gets which piece. How can three people split a cake in a manner that all three agree is fair, without measuring anything? No Banach-Tarskiing allowed. There ...
Tue Sep 27, 2011 10:10 pm UTC
Forum: Logic Puzzles
Topic: Counting with Fingers
Replies: 11
Views: 3696

### Re: Counting with Fingers

If we assume all finger joints can be operated sufficiently independently (including the ones at the base of each finger) then that gives us (3 joints per normal finger)*(8 normal fingers) + (2 joints per thumb)*(2 thumbs) = 28 joints. Each joint has 2 possible states for 2^28=268,435,456 possibili...
Tue Sep 27, 2011 7:34 pm UTC
Forum: Logic Puzzles
Topic: Counting with Fingers
Replies: 11
Views: 3696

### Re: Counting with Fingers

If we assume all finger joints can be operated sufficiently independently (including the ones at the base of each finger) then that gives us (3 joints per normal finger)*(8 normal fingers) + (2 joints per thumb)*(2 thumbs) = 28 joints. Each joint has 2 possible states for 2^28=268,435,456 possibilit...
Tue Sep 13, 2011 5:08 am UTC
Forum: Logic Puzzles
Topic: found an ipod
Replies: 16
Views: 4887

### Re: found an ipod

At minimum 1 song, you hear a song, that's immediately repeated after that, meaning that that song is now the first song of the new set. At maximum 20 songs, as that'd mean that at least one of the songs you've already listened to will be repeated. And from your vantage point that'd be the start of...
Tue Sep 13, 2011 4:52 am UTC
Forum: Logic Puzzles
Topic: Monty Hall Problem [solution discussion]
Replies: 68
Views: 26115

### Re: Monty Hall Problem [solution discussion]

A well reasoned post Okay firstly I think you need to go back to the basics of statistics for a second. Stats is the information that arises out of data points, it does not control or dictate them. Thats actually vitally important here. You have not refuted anything I've said except that talking of...
Fri Mar 16, 2007 8:32 pm UTC
Forum: Logic Puzzles
Topic: Solitaire games
Replies: 7
Views: 3276
There are 7 columns with 0-6 facedown cards in each column respectively, for a total of 21 face down cards. Say that among the face down cards are all the aces, kings, and jacks. The other 9 covered cards don't matter. Then say that the initial faceup cards on each column are queens and tens. Since ...
Sun Feb 11, 2007 10:03 pm UTC
Topic: 0221: "Random Number"
Replies: 167
Views: 26400
"chosen by fair dice roll. "guaranteed to be random. Disp(4 Disp( Reminds me of my Ti-83, but I don't know if there were comments. So probably not. Putting a String on its own line with nothing else counts as a comment. Either that, or it prints the string... I don't remember The TI-8...
Wed Jan 24, 2007 5:54 am UTC
Forum: Forum Games
Topic: 3 letters in a word
Replies: 1802
Views: 284823

ffa
Thu Dec 21, 2006 6:38 am UTC
Forum: Logic Puzzles
Topic: The Narcoleptic Bookworm: Solution Thread
Replies: 14
Views: 5360
It looks like you forgot that page 1 is on the right side of the book when seen in a bookcase. I suppose you could be working with RTL books. :) Was that to me or someone else? I imagined the books lying one on top of the other, with the covers pointing upward. In that scenario (equivalent to books...
Tue Dec 19, 2006 7:12 am UTC
Forum: Logic Puzzles
Topic: The Narcoleptic Bookworm: Solution Thread
Replies: 14
Views: 5360
Assuming I'm interpreting "in order" correctly, the main trick to this puzzle is realizing that while the books go from 1 to 5 left to right, the pages in each book increase in the opposite direction (right to left) . However, even with that, solving the puzzle is generating so many possib...