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Hi,
Why is it that when boiling a kettle (of water) from cold, there is an initial noise of water heating for a few seconds, followed by a silent period, then a gradually rising volume of noise unti
A bit OT, I guess, in that it isn't strictly a puzzle...
While cutting my yard with a riding tractor, I was wondering how you could figure out the most efficient way to do it. You would have to make
A captain is at sea with 30 men.The men are (very conveniently for the puzzle) divided into two groups of 15, group X and group Y. At some point, he realises that, if his ship is to stay afloat, he wi
1993 Saban 'Mighty Morphin Power Rangers' Prism Jig-Saw Puzzles
I have for sale the following 1993 Saban 'Mighty Morphin Power Rangers' Prism 100-Piece Jig-Saw Puzzles in MINT condition. Each puzzle
MAKE YOUR OWN PUZZLE FOLDING CARD
(1) USE 1 PIECE OF CARTON 3x4 +/- 1/2 mm THICK
Hi all,
We're trying to figure out a method to ensure that, during a series of card games or hands, each person sits to the left of each player an equal number of times. We're trying to equalize peo
Hi,
I thought up a interesting (or not) probability puzzle the other day. Two people A,B, are playing a game. Each round is a win or loss, first to win 5 rounds wins the game. But the person that wo
Here's a Puzzle From Wonderland by Lewis Carroll:
Dreaming of apples on a wall, And dreaming often, dear, I dreamed that, if I counted all,
...htly) and Mark Brader (likewise) who comprise some (but not all, just the ones I can remember) of the rec.puzzles heavyweights without which any competition to crown a rec.puzzles champion cannot be c...
I heard a guy on a talk show mentioning that even a state with only 8 people gets 3 full electoral votes and it got me thinking:
What's the smallest number of people that could pick the U.S. preside
Hi!
Looking for some help here.
You have 8 coins, one of which is counterfeit (weighing either more or less than the others). In 3 weighings, can you determine which is the counterfeit and if it i
...cing me, the four spot would be facing my left. While playing with the dice, I came up with the following puzzles:
Arrange the eight dice into a two by two by two cube such that has four die faces s...
This is a 'real life' puzzle:
I have watched several interviews between Osama bin Landen and English-speaking journalists. All the interviews are conducted through an interpreter. I suspect that OBL
Who has a program, that makes out of photos puzzles for the computer (no paper)
what number that has a remainder of 1 and is divisable by 2,3,4,5, and 6 but has no leftover when divided by 7?
Grip a ca. 50cm long stick at both ends like you normally should grip a straight bicycle handlebar. Hold the stick in front of you. Now bring it behind you without releasing it with either hand. In do
The following words have been placed in a logical order.
Nautical Wonder Tomb Foresight Survive Asinine Attention
Where, if at all, should Retaliate be placed in the list?
Apologies if this is not the type of puzzle this ng deals in, but: I'm in the UK and trying to get hold of a 4*4*4 Rubiks Cube (aka Rubiks Revenge). Does anyone know where I can order one online from
What came first - the chicken or the egg?
Dave Clark developed a puzzle 18 years ago. 'Place unique integers evenly around the circumference of a circle so that each number is either the sum or the product of its two nearest neighbours.' For
In my 'Word Alchemy' puzzles, the goal is to change one word into another using 'spells'. For example, the spell 'ABCD
...n 12 October 2002 Saturday at 20:00 (GMT +02). You have seven days to send your answers and ratings of 10 puzzles.
http://www.otuzoyun.com/pqrst
You don't have to register. Your first answer-form ...
Well, if this recursion puzzle isn't easier to solve (than the puzzle of the 'LQ Returns!:Recursion Puzzle' post), then it is at least easier to look at....
Let a(1) = 1;
Let a(2) = 5;
And, for
...ocks, they answer and say:
- Four
And the agent replies:
- Two
And he gets shot to death...
The puzzle: What is the code?
(and it's a real/serious puzzle, it's not a joke with some stupid ...
...t one of ) them is a girl.' What is the probability that both of her children are ) girls? ) ) Sorry, rec.puzzles regulars. :-)
Here's two more:
A woman walks up to you and sais: 'I have two child...
...ot letting them know that there is a hidden void, and then seeing if they can reconstruct the design.
ObPuzzle: What's the maximum volume of hidden voids that one can create using the standard 7 Som...
Let q and r be NONNEGATIVE integers. Let m be a positive integer.
Let:
There is a solution for 8 as well...
Group 1: 9-((6*2)/12) = 8 Group 2: (45-9)/3)-4 = 8 Group 3: (9-5)+(3+1) = 8 Group 4: (66+11)/7-3 = 8 Group 5: (6-3)+(9-4) = 8
If anyone can find a solution for
1. For what integers n>=1 is it possible to place n queens on an nxn chessboard such that every row, every column and every extended diagonal has exactly one queen? By extended diagonal, I mean a diag
Howdy,
I have a Square-1 puzzle in a bag, and I'd like to reassmble it back into a cube. I'm not talking about a 'solution' method to get the colors lined up and so forth. I'm talking about managing
The Paper Challeran is the new type of puzzle created by Ryosuke Ito ,Japanese teacher. You can play again and again and is exciting challenging your previous achievements and records. Please enjoy yo
I never thought I'd have the nerve to post a puzzle like this one. I hope it doesn't get me stoned by the regulars. There is a trick to this paragraph, and some will find it worth while to throw a bit
Here is a puzzle I made up. Hope your find it interesting.
a. Solve the cryptogram:
U PROP BY THERE, USE PARS PAR THERE PROP BY THERE IYBSM PAR YUCR THER, USE YH HS. THINE BP AUQQRS PAUP PAR HGBMB
Hi there,
Does this software jigsaw puzzle sound familiar?
-approx. 12 pieces, although it could be set by the user I think
-the image on the pieces was actually an animation...there were severa
This puzzle was used in round three of my competition.
The Paragraph Puzzle.
Blimey, the competitions first paragraph puzzle! Something of a puzzling landmark don't you think guys? However, it's s
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