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128.61.58.20
topic
10:26:20 AM Jun 3rd 2010
edited by 128.61.58.20
There seems to be some confusion over why the odds of picking a particular point from a continuous line is zero. Say the chance of picking any point on a continuous line is equal to picking any other point. There are an infinite number of "points" on this line. So since the odds are all equal, the chance of picking any one point is 1 / infinity = 0, to abuse notation. Think of it this way: The chance to pick any one number out of a very large set is 1 / # of elements in the set, if all odds are equal. Of course, as any student of basic calculus knows, limit x tends to infinity of 1 / x is...
Faramir
topic
12:54:08 AM Aug 10th 2010
edited by Faramir
I Quote from an Unknown troper (as in, I haven't looked at the history because I'm lazy)... which brings to question... why am I writing this overly long explanation for people who didn't understand the concept at first glance?... whatever. This is gonna be long.

"I believe that our youth can handle this!

"You can't take 3 from 2,
2 is less than 3
so you look at the 4 in the 10th's place
Now that's really 4 tens
so you make it 3 tens
and regroup and change a 10 to 10 ones
and add them to 2 and that's twelve
and you take away 3 and leaves... 9! "
Now.... That's not really that complicated... having been taught that kind of math I can show what the core thing about it is (for anyone who's actually interested that is).
The teachers that taught me "New Math" put it this way: Big numbers are just a ton of little numbers added together, like roman numerals. 342-173
would be equal to (300+40+2)-(100+70+3)... or (100+100+100+10+10+10+10+2)-(100+10+10+10+10+10+10+10+3). We go into the first digits, and since 2 is less than 3,we take the 40, which is really (10+10+10+10) and we grab one of those 10s. We add it to the 2 and that makes 12.
12-3= 9
Since we took care of those, now we're left with 330-170=(100+100+100+10+10+10)-(100+10+10+10+10+10+10+10) We take the next digits. 30-70
And the 30 is smaller than the 70, so we take the 300, which is just (100+100+100) and we take one of those 100 and give it to the 30, making this:
130-70= 60
Now we're left with (100+100)-(100)... I know this one is very tricky, but I trust you'll get 100 out of that.
Now, add all the pieces together and you have
9+60+100= 169.
See? not hard at all!!! Any parents that had trouble helping their kids with their math can now use this guide! YAY! XD
billybobfred
topic
09:19:01 PM Nov 6th 2010
re: cut

This title has brought 18,681 people to the wiki from non-search engine links since 20th FEB '09.

I swear someone pointed this out the last time the page was cutlisted.
Micah
11:40:22 PM Nov 6th 2010
edited by Micah
The question is, is it still bringing in enough people to make it worth keeping around?

For what it's worth, there've been 10 so far today...
SomeSortOfTroper
05:34:33 AM Aug 12th 2011
I point out that a) at the time of posting this, we've gained two more and b) this twenty thousand or so can be shown to have happened in a much shorter time frame than that.

This is I Am Not Making This Up.Math moved to a new name. The old name had over 118,000 inbounds, it was our third most externally linked page and it got moved only about a year ago so this has caught up to a lot of tropes in about half the time.
173.11.36.169
topic
12:49:30 PM Nov 8th 2010
Would the 9-trick work with any number that's one less than the base you're using?
quodlibet
01:42:03 PM Nov 8th 2010
Yes.
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