This isn't really a brain teaser as much as a game.
I have a Five Crowns deck at home. This consists of a deck of 55 cards (well, two decks of cards) with five suits. 3 is lowest and King is highest. You can't do 3-King in a straight.
There are jokers, but I'm not using them --...
I'm willing to post the solutions on the board if everyone agrees.
In the meantime, I found a second problem.
It's like the Four Nines Problem, except that it's got two 4's and two 9's.
You can get all the numbers from 0 to 232. This is quite a bit harder as there are more options.
Here's another hint -- it took me maybe 3 minutes to figure out the solutions for all of the numbers except maybe five or six. Those six took an hour more. Clearly, there's a trick. But what is it?
One may not turn the 9's upside down. Sorry about that! :frown:
Square root is legal (and indeed, is crucial). Any mathematical symbol which does not involve letters (sin, cos, etc.) is permitted. Ceiling and floor are prohibited.
The .9=1 thing is
.9 with a bar over it (.9 bar) =...
The first few are fairly easy. However, the higher the numbers get, the harder they are. By the time you get to 50-60 you have to start to get VERY creative. Rest assured, it can be done.
Hi! I have a puzzle here and was wondering if you guys could solve it.
Using exactly four nines each time and no other numbers or letters, find expressions which evaluate to every integer between 0 and 132. You may put parentheses wherever you wish and uses whatever mathematical symbols...
This is probably a complete quack of an idea, but I can't get it out of my mind. I can't tell if it belongs more on an economics board, though. :bugeye:
Could conservation laws exist for quantities which are not tangible?
We all know there are laws like conservation of momentum...