Toribash
Re: How good is you math? 0.999... = 1
Originally Posted by slainveteran
Originally Posted by Patrick
10 x 0.999... = 9.999...

c = 0.999...

10c = 9.999...

10c - c = 9.999... - 0.999...

9c = 9

c = 1
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This is what i did after those steps
d = 1

c = d

10d = 9.999...

10d-d = 9.999...-d

10d-d=9.9999...-1

9d=8.999...

9c=8.999....

c=8.999.../9 therefore c does not equal 1
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Another way of doing it

c=.999...
10 x .999...=9.999...
10 x c=9.999...
c=.999



10d = 10

I was responding to slainveteran saying this
Re: How good is you math? 0.999... = 1
Originally Posted by Patrick
But if .9999 did really equal 1 i could interchange 1 and .9999 freely.

that should be possible, yes.

There is no advantage (as far as I know) of using 0.999... instead of 1 in equations. As you might be able to guess, it is an advantage to express 0.999... as 1 though.

Originally Posted by isuck
This parabola is a total bitch. I don't think 10c = 9.999...

if c = 0.999...
then 10*c = 9.999...
I has a flavour
Re: How good is you math? 0.999... = 1
10c - c and 9c are completely different things...

10c = 9.999
9c = 8.991
10c - c = 9

and taking away from 10c - c is wrong, this is clearly stated in balancing equations in mathematical laws

there fore... wikipidia sucks.
Re: How good is you math? 0.999... = 1
Originally Posted by Sieg Storm of the chaos legion
10c - c and 9c are completely different things...

10c = 9.999
9c = 8.991
10c - c = 9

and taking away from 10c - c is wrong, this is clearly stated in balancing equations in mathematical laws

there fore... wikipidia sucks.

I'm not sure I follow. Also, 9c would equal 8.999... Not 8.991 (the difference is the repeating decimal. We're not doing these calculations with static terms, but rather everything here repeats).

9c = 8.999...

BUT 10c - c = 9c. However, logic would then conclude that 9c = 1.

Keep in mind that math is my weak subject, so there could be some holes I'm just not seeing.
Re: How good is you math? 0.999... = 1
Originally Posted by Sieg Storm of the chaos legion
many people say 5000. it is in-fact 4100. this is a simple trick of the mind... 10c - c Doesnt = 9c... let me draw it out for you.

I got 4100. 4000+100 = 4100.

Originally Posted by Sieg Storm of the chaos legion
C x C x C x C x C x C x C x C x C x C = 10c
C x C x C x C x C x C x C x C x C = 9c

(C x C x C x C x C x C x C x C x C x C) - C = 10c - c... witch DOSN'T = C x C x C x C x C x C x C x C x C
(C x C x C x C x C x C x C x C x C x C) divided by c= 10c/c = 9c

if you still don't get it then you shouldn't post here anymore =P
for these are very standard concepts of Mathematics.

10c does not equal C x C etc. 10c = C+C+C+C+C+C+C+C+C+C.

According to your math... Let's say c = 2... 10c = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2. (That's 1,024, btw)

That's 2^10, not 10x2, which is what 10c is if c=2. 10c is: 10 x C. So, 10c would equal 20, there. In that case, 10c - c = 9c = 18.

This is only incorrect if you don't believe .333.... = 1/3. It uses the same properties. There is no way to prove this wrong mathematically, unless you don't accept .333... as 1/3.
Re: How good is you math? 0.999... = 1
sorry my bad I'm thinking of squaring.. that would be C10 >< sorry deleted stupidity
Re: How good is you math? 0.999... = 1
Originally Posted by Sieg Storm of the chaos legion
sorry my bad I'm thinking of squaring.. that would be C10 >< sorry deleted stupidity

It's cool.
Re: How good is you math? 0.999... = 1
Siegs amazing, strange, tricky, and purely impossible math questions:

Note. if it says impossible next to it it is impossible... no matter the rating...



1: -- voted 5/10 on the strange measure.

Greedy Merchant A has fourteen bolts of cloth to sell. Each bolt of cloth is worth twenty dollars, and is either red, green, or gold. Greedy Merchant B also has some bolts of cloth to sell, which are colored either magenta, chartreuse, mauve, or lavender, and worth the same amount of money.

Now, knowing that Greedy Merchant B once worked for greedy merchant A as a clerk in his twenty third year, and that greedy merchant A never payed Greedy Merchant B all that well, and knowing that Greedy Merchant B has six hungry, screaming children, one wife, and three mistresses to support, while Greedy Merchant A only has two children, one wife, and one mistress, and that Greedy Merchant B really doesn't like Greedy Merchant A all that much, even though they were once lovers, it is easy to infer how many times a week each of them bathes, and whether or not the amount of dirt on their bodies increases geometrically or logarithmically as they fail to bathe.


2: -- voted 4/10 on the impossible measure

Greedy Merchant A has fourteen bolts of cloth to sell. Each bolt of cloth is worth twenty dollars, and is either red, green, or gold. Greedy Merchant B also has some bolts of cloth to sell, which are colored either magenta, chartreuse, mauve, or lavender, and worth the same amount of money.

Now, knowing that Greedy Merchant B once worked for greedy merchant A as a clerk in his twenty third year, and that greedy merchant A never payed Greedy Merchant B all that well, and knowing that Greedy Merchant B has six hungry, screaming children, one wife, and three mistresses to support, while Greedy Merchant A only has two children, one wife, and one mistress, and that Greedy Merchant B really doesn't like Greedy Merchant A all that much, even though they were once lovers, it is easy to infer how many times a week each of them bathes, and whether or not the amount of dirt on their bodies increases geometrically or logarithmically as they fail to bathe.


3: -- voted 7/10 on the Tricky measure

Of three men one man always tells the truth, one always tells lies, and one answers yes or no randomly. Each man knows which man is who. You may ask three yes/no question to determine who is who. If you ask the same question to more than one person you must count it as question used for each person whom you ask. What three questions should you ask?


4: -- voted 6/10 on the Tricky measure
Simple math required.. Create the number 24 using only these numbers once each: 3, 3, 7, 7. You may use only the following functions: +, -, *, /. This is not a trick question, for example the answer does not involve a number system other than base 10 and does not allow for decimal points

5: voted 10/10 on the amazing factor!! OMFG!!
1. Grab a calculator. (you won't be able to do this one in your head)
2. Key in the first three digits of your phone number (NOT the area code)
3. Multiply by 80
4. Add 1
5. Multiply by 250
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again.
8. Subtract 250
9. Divide number by 2
Do you recognize the answer?

Tips: if you didn't get it right then do it again, use the calculator on you computer, make sure it's in .deg mode, and type in the calculation on you keyboard as many people mess up...

Note: works with any 6 digit number.






Thanks for reading might add more. didn't make any of these up btw
cheers: Sieg.


Modify:

LMAO found this thingy while i was messing around, I'm one of the 2% of "different" people..: http://www.math.umass.edu/~diehl/trick.html

note: i got a blue dildo Oo
Re: How good is you math? 0.999... = 1
start your own thread. This is my hard math thread.

Also, I am deleting all the crap in here (:o got 4 pages down to 2)
I has a flavour