Sudden Death

Sionnach Glic · Post by **Sionnach Glic** » Sat Dec 20, 2008 10:52 am

My new high score: 5! 8)

Post by **Tsukiyumi** » Sat Dec 20, 2008 2:58 pm

I usually have to play for a while before I get a good run; a good run being one where no planets come up.

Post by **Mikey** » Sat Dec 20, 2008 3:24 pm

Teaos wrote:Woot I got 4!

Rochey wrote:My new high score: 5!

You guys mean in the Sudden Death, or just counting?

Actually, I believe that 4! = 10. Right?

Sionnach Glic · Post by **Sionnach Glic** » Sat Dec 20, 2008 3:34 pm

Presumably that's his new high score without cheating.

stitch626 · Post by **stitch626** » Sat Dec 20, 2008 4:33 pm

Mikey wrote:
Teaos wrote:Woot I got 4!

Rochey wrote:My new high score: 5!
You guys mean in the Sudden Death, or just counting?

Actually, I believe that 4! = 10. Right?

Um, actually 4! = 24.

And 5! = 120.

Sionnach Glic · Post by **Sionnach Glic** » Sat Dec 20, 2008 6:26 pm

Hm? I said my best.

Post by **Mikey** » Sat Dec 20, 2008 10:37 pm

Rochey wrote:Hm? I said my best.

Don't interrupt when I'm trying to make fun of you.

Sonic Glitch · Post by **Sonic Glitch** » Sun Dec 21, 2008 2:54 am

stitch626 wrote:
Mikey wrote:
Teaos wrote:Woot I got 4!

Rochey wrote:My new high score: 5!
You guys mean in the Sudden Death, or just counting?

Actually, I believe that 4! = 10. Right?
Um, actually 4! = 24.
And 5! = 120.

What does ! do to numbers anyway? I could never figure it out.

Lazar · Post by **Lazar** » Sun Dec 21, 2008 3:46 am

I got 10! Um... I mean 10.

shran · Post by **shran** » Sun Dec 21, 2008 5:13 am

1!=1 2!=2x1=2 3!= 3x2x1=6 etc. etc.

Post by **IanKennedy** » Sun Dec 21, 2008 9:48 am

It's called factorial and, as Shran has just pointed out, you calculate it by multiplying all the integer numbers from 1 to the number specified together. For example:

1! = 1
2! = 1 x 2 = 2
3! = 1 x 2 x 3 = 6
4! = 1 x 2 x 3 x 4 = 24
5! = 1 x 2 x 3 x 4 x 5 = 120
6! = 1 x 2 x 3 x 4 x 5 x 6 = 720
7! = 1 x 2 x 3 x 4 x 5 x 6 x 7 = 5,040
8! = 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 = 40,320
9! = 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 = 362,880
10! = 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 = 3,628,800

as you can see factorials get big very very quickly, even faster than geometric progressions.

Sionnach Glic · Post by **Sionnach Glic** » Sun Dec 21, 2008 12:01 pm

They're one of the few maths things I actualy remember.

I've also seen "!=" to mean "not equal to. For example: X != Y. Though I prefer "=/=".

Post by **Captain Seafort** » Sun Dec 21, 2008 12:10 pm

It's all a matter of where you put the !, so 4 != 23, but 4! = 24. And yes, =/= makes much more sense, since it's a proper mathematic sign (or at least an approximation of one).

Sionnach Glic · Post by **Sionnach Glic** » Sun Dec 21, 2008 12:18 pm

Agreed. Though in many cases you can tell from the context what they mean. Still, =/= is easier to read in a hurry. I think I've only seen != used by those crazy Yanks, anyway.

Post by **IanKennedy** » Sun Dec 21, 2008 12:21 pm

You have to avoid confusing computer programming languages with mathematical notation. != is a programming item, it comes about because ! in certain languages means 'not', thus != is 'not equal to'. It is also often written as <>. I don't know of a computer language that uses ! to mean factorial.

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