Search found 115 matches

by Mouffles
Tue Jul 10, 2007 8:35 am UTC
Forum: Forum Games
Topic: Math game!
Replies: 36
Views: 8366

1. The nth term in the sequence is 69874472491462 modulo the nth prime number: 69874472491462 = 0 mod 2 69874472491462 = 1 mod 3 69874472491462 = 2 mod 5 etc. The sequence is 0, 1, 2, 2, 1, 2, 1, 2, 1, 3, 2, 0, 1 , 25, 31, 43... (Note that I chose the next number to be small to keep the game interes...
by Mouffles
Mon Jul 09, 2007 11:09 pm UTC
Forum: General
Topic: INTRO THREAD 2.0: INTRODUCE YOURSELF OR PERISH!
Replies: 2548
Views: 329108

Re the SOHCAHTOA story: my maths teacher never used mnemonics, it was all rote learning. One of his favourite excercises was the 'three minute test'. We had three minutes to fill in a sheet with all the various trig identities. I don't know that it helped me much, since most of them can be derived f...
by Mouffles
Mon Jul 09, 2007 10:51 pm UTC
Forum: Logic Puzzles
Topic: I dare you to solve this.
Replies: 82
Views: 35786

When it says number 12 is wrong, it's telling you that at that point your answers are not consistent, becasue you haven't answered an even number of questions with consonants. It doesn't mean the answer is not A.
by Mouffles
Mon Jul 09, 2007 12:01 pm UTC
Forum: General
Topic: Dial Dillema
Replies: 44
Views: 5012

Intelligence doesn't make someone arrogant. It just means that they have greater potential, and other factors would determine whether they put their brain to good use. As a parent, I would want my child to have all the help they can get.
by Mouffles
Mon Jul 09, 2007 11:52 am UTC
Forum: General
Topic: Dial Dillema
Replies: 44
Views: 5012

I would give intelligence 10 and beauty 4. But what about things like perserverence? I would rate that higher than intelligence.
by Mouffles
Mon Jul 09, 2007 11:37 am UTC
Forum: Forum Games
Topic: Guess The Next Poster
Replies: 23681
Views: 1848481

I was too late. pollywog is next.
by Mouffles
Mon Jul 09, 2007 11:26 am UTC
Forum: Forum Games
Topic: Count to one thousand
Replies: 379
Views: 58130

Mr Mouffles, I have a problem with your sig. Wouldn't a 5x5x5x5x5 Rubik's Cube cease to be a cube? It's a higher dimensional cube. Or maybe I should change it to the 5x5x5x5x5 Rubik's Hypercube? Next is 69 in hexadecimal. [edit] 3x3x5 Rubik's Cube 'Rubik's Cube' decribes the puzzle, in all its diff...
by Mouffles
Mon Jul 09, 2007 11:20 am UTC
Forum: Forum Games
Topic: Questions only
Replies: 965
Views: 117451

Wasn't it something to do with elephants?
by Mouffles
Mon Jul 09, 2007 9:20 am UTC
Forum: General
Topic: Three Wishes
Replies: 91
Views: 11187

Invisible Queen wrote:And thirdly, I wish the genie back to the bottle. If you don't do that their uncontrollable power will destroy the world. :|

I would wish for the genie to self-destruct. You never know who might find it next.
by Mouffles
Mon Jul 09, 2007 8:37 am UTC
Forum: Forum Games
Topic: Count to one thousand
Replies: 379
Views: 58130

First three digit multiple of three.
by Mouffles
Mon Jul 09, 2007 8:12 am UTC
Forum: Forum Games
Topic: Guess The Next Poster
Replies: 23681
Views: 1848481

Foiled. But I also think Kit.
by Mouffles
Mon Jul 09, 2007 7:47 am UTC
Forum: Forum Games
Topic: Guess The Next Poster
Replies: 23681
Views: 1848481

Another post completely out of the blue. I say DarkWerewolf again.
by Mouffles
Mon Jul 09, 2007 7:42 am UTC
Forum: Forum Games
Topic: Questions only
Replies: 965
Views: 117451

What happened to the rollercoaster, anyway?
by Mouffles
Mon Jul 09, 2007 7:36 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0287: "NP-Complete"
Replies: 191
Views: 36500

It's interesting that if the total had been $15.00 or $15.10, the problem would have a unique solution.
by Mouffles
Mon Jul 09, 2007 4:21 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0287: "NP-Complete"
Replies: 191
Views: 36500

chessguy wrote:That is:
1 Mixed Fruit, 2 Hot Wings, 1 sampler plate, or
7 Mixed Fruit (already mentioned)

You beat me to it. I just came up with the same answer.
by Mouffles
Mon Jul 09, 2007 4:09 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0287: "NP-Complete"
Replies: 191
Views: 36500

But only three people at the table. I say a sampler plate, two hot wings, and one mixed fruit.
by Mouffles
Sun Jul 08, 2007 11:02 pm UTC
Forum: Forum Games
Topic: Math game!
Replies: 36
Views: 8366

2

The differences between consecutive primes are
0, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 6, 4...
(Defining the first difference to be 0)

Now subtract 3*floor(d/4), where d is each difference.

So we get
0, 1, 2, 2, 1, 2, 1, 2, 1, 3, 2, 3, 1...
by Mouffles
Sun Jul 08, 2007 10:32 pm UTC
Forum: General
Topic: The last time you used windows 95
Replies: 26
Views: 3112

I used the hard drive disc carrying it as a mirror. Still do, in fact. It's very shiny.
by Mouffles
Sun Jul 08, 2007 12:10 pm UTC
Forum: Your art and links
Topic: Define Time!
Replies: 10
Views: 2633

265 the first time, 530 after three or four more tries.
by Mouffles
Sun Jul 08, 2007 9:25 am UTC
Forum: Logic Puzzles
Topic: Subdivisions of Rectangles [solution]
Replies: 15
Views: 4516

It's not an if-and-only-if: a rectangle with sides lined up with the checkerboard can cover an equal amount of black and white area without having a side of even integer length. Even integer length implies equal area, but not vice versa. That's true. My mistake. I have just found a better explanati...
by Mouffles
Sun Jul 08, 2007 2:53 am UTC
Forum: Forum Games
Topic: Count to 1 1000 times!
Replies: 1000
Views: 165736

-e^(i*pi)
by Mouffles
Sun Jul 08, 2007 1:50 am UTC
Forum: Forum Games
Topic: Count to one thousand
Replies: 379
Views: 58130

1/(0.01 + 0.001 + 0.0002 + 0.00003 + 0.000005 + ...)
(Fibonacci numbers)

EDIT: 87 was posted twice, so I'll do 88 as well - the year BC of the first Roman Civil War.
by Mouffles
Sun Jul 08, 2007 1:42 am UTC
Forum: Logic Puzzles
Topic: Subdivisions of Rectangles [solution]
Replies: 15
Views: 4516

Maybe I'm not explaining this very well. The key point is that if a rectangle has an even side and is parallel to the grid, then it covers equal areas of black and white no matter where it is on the grid or which way it is oriented. Any neighbouring rectangles and their orientation is irrelevant: we...
by Mouffles
Sun Jul 08, 2007 1:23 am UTC
Forum: Forum Games
Topic: Word Association Game 2: Electric Boogaloo
Replies: 12812
Views: 1049402

bedroom
by Mouffles
Sun Jul 08, 2007 1:20 am UTC
Forum: Forum Games
Topic: Count to one thousand
Replies: 379
Views: 58130

57 (in base 16)
by Mouffles
Sun Jul 08, 2007 1:10 am UTC
Forum: Logic Puzzles
Topic: Subdivisions of Rectangles [solution]
Replies: 15
Views: 4516

This solution is actually flawed... the rectangles inside need not have its 'even' sides parrallel to the outer rectangle, and because of this your proof falls apart... sry The rectangles inside have sides parallel to the outer rectangle, so they have sides parallel to the grid (and hence an even s...
by Mouffles
Sun Jul 08, 2007 12:08 am UTC
Forum: Forum Games
Topic: Math game!
Replies: 36
Views: 8366

1

The number of 1's in this sequence:
97, 105, 112, 119, 125, 131, 136, 141, 145, 149, 152...
(Add 8, 7, 7, 6, 6, 5, 5...)

The sequence is 0, 1, 2, 2, 1, 2, 1, 2, 1, 1, 1...

(I'll leave modulo 3 for the next person)
by Mouffles
Sat Jul 07, 2007 11:29 pm UTC
Forum: Logic Puzzles
Topic: Subdivisions of Rectangles [solution]
Replies: 15
Views: 4516

I have another solution for part (b). Start with an infinite grid coloured like a chessboard. Then take the large rectangle, double all the lengths so that all integral lengths become even lengths, and place it at the origin, with the sides parallel to the grid. Then it is easy to prove (but hard wi...
by Mouffles
Sat Jul 07, 2007 11:54 am UTC
Forum: The Help Desk
Topic: The technical thread
Replies: 436
Views: 74833

This is not really a problem, but it's still interesting. If I turn on my laptop and then plug my wireless mouse into the USB port, the laptop ALWAYS freezes while booting up. If I wait a few seconds this never happens. Very strange. Any ideas as to what could cause this?
by Mouffles
Sat Jul 07, 2007 10:39 am UTC
Forum: General
Topic: INTRO THREAD 2.0: INTRODUCE YOURSELF OR PERISH!
Replies: 2548
Views: 329108

pollywog wrote:
keithc wrote:
sheepster wrote:Evenin' guys. I'm sheepster and I'm Welsh.


Well, with a name like sheepster it was either Welsh or Kiwi


Mouffles wrote: I'm 18, male, currently studying Mechatronics at Auckland Uni.


Careful. We're getting stronger.

Go the Kiwis!
by Mouffles
Sat Jul 07, 2007 9:02 am UTC
Forum: Forum Games
Topic: Math game!
Replies: 36
Views: 8366

2 Start with the sequence 1, 2, 21, 212, 21221, 21221212... Then our sequence is the number of distinct prime factors. 1 = 1 (0 factors) 2 = 2 (1 factor) 21 = 3*7 (2 factors) 212 = 2^2*53 (2 factors) 21221 is prime The next number has 2 distinct prime factors The one after that has 3 distinct prime ...
by Mouffles
Sat Jul 07, 2007 7:30 am UTC
Forum: General
Topic: Umm....math? (previously a hard question)
Replies: 14
Views: 2183

Of course it's yes. The Riemann Hypothesis is awesome.
by Mouffles
Fri Jul 06, 2007 10:50 pm UTC
Forum: General
Topic: What's your favorite number?
Replies: 81
Views: 10253

153
153=1^3+5^3+3^3
153=1!+2!+3!+4!+5!
...and heaps of other cool properties.
by Mouffles
Fri Jul 06, 2007 9:42 pm UTC
Forum: Mathematics
Topic: Annoying Riddle
Replies: 17
Views: 5015

I also came up with the same infinite product via a different method. To solve the original problem, we have to find a closed form expression for the product of 1-2/3^k, k from 1 to infinity. I suspect that this doesn't exist, since there is no neat expression for the product of 1-1/3^k, k from 1 to...
by Mouffles
Fri Jul 06, 2007 9:33 pm UTC
Forum: General
Topic: INTRO THREAD 2.0: INTRODUCE YOURSELF OR PERISH!
Replies: 2548
Views: 329108

Hi everyone. I was introduced to xkcd a while ago and have just started reading the forums (or is it fora? or both?). I'm 18, male, currently studying Mechatronics at Auckland Uni. I don't really have anything interesting to say, but the mods seem to get angry at people who don't post here (please d...

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