ForumsThe TavernMath Thread

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daleks
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daleks
3,766 posts
Chamberlain

This thread is just what the title says it is. It is all about Math. You can post math jokes(the jokes don't have to be good), math questions, what you like about Math, or even why you hate Math.

My math joke: Resistance is not futile. It is voltage divided by amps.

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Alexistigerspice
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Alexistigerspice
1,502 posts
Farmer

That makes no sense, but alrighty then xD
I know the approximate metric centimeter equivalent to an inch...?
2.53ish.

EmperorPalpatine
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EmperorPalpatine
9,439 posts
Jester

Oh, and how many digits of pi do you know?


3.1415926535897 That's all I've ever needed because that's farther than pi on a standard TI-30X IIS calculator.
master565
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master565
4,104 posts
Nomad

How many other irrational numbers have you memorized? :P


All of them.
johnmerz
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johnmerz
536 posts
Shepherd

[quote=Alexistigerspice]3.1415926535897932384626433832795028841971693993751058209749445923078164...
Thats for you John. [/quote]
Lol is that my homework assignment? Memorize 68 digits of pi? xD Well, I know 25 digits: 3.141592653589793238462643383

Alexistigerspice
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Alexistigerspice
1,502 posts
Farmer

No, I'm saying I did that for you
You asked me if I could memorize a bunch of digits of pi just by looking at them, and I said there wasnt really a point. But since we're married, to make you happy...
[quote]3.1415926535897932384626433832795028841971693993751058209749445923078164...
[/quote

johnmerz
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johnmerz
536 posts
Shepherd

[quote=Alexistigerspice]But since we're married, to make you happy... [/quote]
Thanks! *Is impressed at the number of digits memorized*

Alexistigerspice
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Alexistigerspice
1,502 posts
Farmer

You're welcome!
*gets back to memorizing portions of the kajillion decimal places of pi*

johnmerz
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johnmerz
536 posts
Shepherd

lol You should set a record on memorizing digits of pi! Maybe even memorize more digits than Master565. xD

Alexistigerspice
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Alexistigerspice
1,502 posts
Farmer

That would be quite a feat, as he knows "all of them!"
Do you think you could help me with binary? I'm not very good at it. The whole concept goes way over my head for some reason :/

johnmerz
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johnmerz
536 posts
Shepherd

lol I'll explain binary in simple terms then: the first digit (the digit to the far right) is 2^0. If it is a 0, then it is equal to 0, if it is 1, it is equal to 2^0. The second digit is 2^1, if it is 0, then it is equal to 0, if it is 1, then it is equal to 2^1, and so on so forth. You add all of the digits to get the number in decimal form.
Oh, and:
2^0=1
2^1=2
2^2=4
2^3=8
2^4=16
2^5=32
2^6=64
2^7=128
2^8=256
2^9=512
2^10=1,024
2^11=2,048
2^12=4,096
2^13=8,192
2^14=16,384
2^15=32,768
2^16=65,536
2^17=131,072
2^18=262,144
2^19=524,288
2^20=1,048,576

I'll stop there. Oh, and I did all of those mentally. 8-)

Alexistigerspice
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Alexistigerspice
1,502 posts
Farmer

I understand that part. I have a list of all the letter assignments, and I understand the whole 1 is 1, 111 is 7 (i think) thing, but I dont understand how you know where the "starts" and "stops" are

Alexistigerspice
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Alexistigerspice
1,502 posts
Farmer

Oh I think I get it! Thanks Jeol and John:3 I dont know why i had such trouble understanding that...

johnmerz
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johnmerz
536 posts
Shepherd

You're welcome. It was confusing to my before as well, but I understand it perfectly now. Just think in terms of 2^x. That's how I got how it worked.

Bladesam
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Bladesam
74 posts
Farmer

Binary is fun =D You can actually learn to count binary on your fingers. Basically binary is a base 2 system rather than a base 10 system that we're used to. So every time the number goes up 2, it moves a place over.

Here's how it goes:
(Algebraic)=(Binary)

0=0
1=1
2=10 (see, it moved one place over.)
3=11
4=100 (again)
5=101(the whole thing doesn't change, you have to fill up all the spaces before moving up another place.)
6=110
7=111
8=1000 (Now is when it goes up the next spot.)
9=1001
10=1010
11=1011
12=1100
13=1101
14=1110
15=1111
16=10000

If you see, every time you go up a place in binary, the equivalent value in the algebraic system doubles. So now I'm just going to show the double-ings.

32=100000
64=1000000
128=10000000
256=100000000
512=1000000000
1024=10000000000
2048=100000000000

(Btw, the max you can count on your fingers in binary is 1023, you would need an eleventh finger to get to 1024.)

Hope this helps!

Bladesam
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Bladesam
74 posts
Farmer

Wow, I'm a little late :P Oh well, went into a lot of detail =D

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