Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

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## #1 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:49:38

Soo... let the people who have a problem with the idea cometh here! Cause I just figured it out, and I like to hear new ideas.

## #2 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:46:08

Oh cool, I just turned into a Member!

sorry, off topic.

## #3 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:44:43

Yes. I just got a glimpse of (cue mystical music) The world of MAATH!

## #4 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:41:56

ok.
i thought  meant multiply.
So all that I had the problem with was the wording of the problem on the site. I say yes.

## #5 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:37:25

Like (5 times 1= 5) and (5 times 0.999... = 5)

## #6 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:35:56

What do you mean?

the period after the 5 is a sentence stopper period.

## #7 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:30:51

Thats what I wrote, right?!?!

And that means that 0.999... has the same properties as 1.
Like 50.999... = 5.
So we're sure about that, right?

## #8 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:20:22

Yeah, I have never disagreed with that.
I know that 1 can be representated more than once, but what I am trying to figure out is if 0.999... written in standard form is the same as 1 written in standard form. Now I am 0.6 leaning toward Yes.But every so often my brain goes back to no.

And talking about brainpower, I am higher then 5th grade.

## #9 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 09:11:42

Agree.

Not 3rd grade little, but not College big.

## #10 Re: Euler Avenue » How to remember numbers? » 2012-09-16 09:01:48

I put "1234" and it showed all these complicated things, it couldnt just say Count to 4 from 1.

## #11 Re: Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 08:54:46

There IS
1.0

01

1 1

2-1

x^0
etc...

I AM going both ways on this subject.
I'm just a little kid, don't confuse me too much!

## #12 Dark Discussions at Cafe Infinity » 1? Or not? » 2012-09-16 08:10:51

Smartiebell
Replies: 43

My personal view- but I do not like the wording.

I (thought) it's like the "proof" of 1=2. There has to be a hidden mistake.

The problem( copied and pasted )
~~~~~~~~~~~~~~~~~
Let X = 0.999...
Then 10X = 9.999...

Subtract X from each side to give us:

9X = 9.999... - X

but we know that X is 0.999..., so:

9X = 9.999... - 0.999...
or: 9X = 9

Divide both sides by 9:

X = 1

But hang on a moment I thought we said X was equal to 0.999... ?

Yes, it does, but from our calculations X is also equal to 1. So:

X = 0.999... = 1

Therefore 0.999... = 1

~~~~~~~~~~~~~~~~~~

Common Sense: The integer 1 has a 1 in the ones place, and 0.999... has a zero.

But, (oh crack, I just got confused!)  1/3 = 0.333... and 1/3  3 =3/3=1, and 0.333...   3 =0.999...
so 0.999 would equal (1)! ( put parenthesis so not to be mistaken for 1!)

I need some diffrent opinions...

EDIT: I say yes now, thnx bobby!

## #13 Introductions » Hey. » 2012-09-16 05:11:38

Smartiebell
Replies: 3

Hi, I'm me!:) Call me Belle. I'm an advanced kid. Gimme a math problem, please. I'm a long time fan of Mathisfun.com, and only now got around to regestering here.

Soo... who are you?