Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

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## #1 Re: This is Cool » Fun way to remember PI » 2009-05-09 00:05:59

Yeah... But we had a bonus question where we got the same amount of extra marks as we could write down digits.

BUT even better you can simply remember the sentence:

How I wish i could calculate pi

The deal is the same... Add the numbers in each word and get pi. Though you could just remember the actual digits. Thats so boring...:|

Does anyone else know sentences/verses like these? Make some up?

## #2 Re: Dark Discussions at Cafe Infinity » mathematicians in first - can this be right? » 2009-05-08 23:32:55

Well, it probably also depends on what sort of mathematicians. Working for certain companies may be better than others....

regnar

## #3 This is Cool » "The trick that fooled Einstein" » 2009-05-08 22:52:09

regnar998
Replies: 0

I found this trick which uses algebra which you can fool people with:

http://revision3.com/scamschool/coinprediction/

It looks like an awesome magic trick and uses algebra to amaze your friends!!

Regnar

## #4 Puzzles and Games » Infinity minus infinity » 2009-05-08 22:46:03

regnar998
Replies: 5

I've come across this weird little puzzle,

Infinity - Infinity = ???

Now when you first look at this you might think it equals zero. But look at it like this:

If you have infinity marbles and you give infinity (As in all of them) to someone else then infinity - infinity = nothing.
But if you have infinity marble numbered 1, 2, 3 etc. and gave every second marble to someone then infinity - infinity = infinity
BUT if you give someone else all the marbles numbered 3 or above (Which is infinity marbles) then infinity - infinity = 2.
But the question is in all these examples are you really giving infinity marbles away and do you still have infinity (Or whatever) left???

What do you guys think anyway?:)

Regnar

## #5 Jokes » The wooden car » 2009-05-08 22:32:06

regnar998
Replies: 5

Here's one of my favorite jokes:

What happened to the wooden car with wooden wheels and a wooden engine??

It wooden go!!!!!!!!!!!!!!

Hehe... Love it.:lol:

aquitthy csat

## #7 Re: Dark Discussions at Cafe Infinity » Pink elephant is caught on camera » 2009-05-08 22:25:10

Hehe... I read the title and thought it was a hoax! lol

## #8 This is Cool » Fun way to remember PI » 2009-05-08 22:22:52

regnar998
Replies: 5

Hi, I'm new here and just wanted to post an awesome way to remember pi up to 30 decimal places!

To remember it you must remember this "poem":

For I must a verse prescribe,
By artful sense and words describe,
Rhyming's Cryptic Chemistry,
Bit by bit, wiggling free,
Circle by circle, soon you see,
sketched out in Grecian Schoolery.

The secret to getting PI out of it is to count the number of letters in each word. (3.1415926535897...) and you get PI to 30 decimal places!
This has definately helped me in exams!:D
Hope it helps, anyway,
Regnar.