Originally Posted by cpvdh

proof 1:

1/3=.3333333...

multpily both sides by 3

1/3 * 3 = .333333... * 3
3/3 = .999999999...
1 = .9999999...

proof 2:

this ones more technical but still easy

let x = .999999....
then 10*x = 9.99999999...
subtract x from 10x
we get
10x - x = 9.999999... - .999999...
so
9x = 9
divide by 9
x=1

its just a basic concept of infinity, it goes forever, so there is no remainder on .999...
i thought it was a lie first time i heard it


in 3rd grade h: