Interesting question. Does 1.99999999999... = 2

[Soil]

1/3 = .333...

2/3 = .666...

3/3 = .999...

I might not be the best at explaining it but wikipedia does a good job.

http://en.wikipedia.org/wiki/Proof_t...99..._equals_1



by infinitely small you are meaning .000...1 which is not a real limit number.

You cannot have reoccurring numbers to infinity and then another number at the end.

There is no difference

My reply on page 2 kinda says what that is a load of bull.
Whoever wrote that explaination doesnt have a clue on maths.

1.99999 is 1.99999 NOT 2!

[Virgin Mary]

Maths is annoying, but I'm pretty sure 1.999999999 is just 1.999999999, not 2. 3/3 is a fraction. I figure I'm wrong but oh well, just my $0.02.

[Wootzeh]

But it never ends. There is no last digit.

there is no number that is in-between 2 and 1.999...



we are not talking about 1.9999

this is 2 and 1.999... repeating forever

STop telling people that you mean 1.99999... they know that they just don't put the dots >.>

[Jambe]

When it is at 1.9999999 it doesnt jump to 2 1.999999 is an acctual number its not just 'Nearly 2' its just as important as any other number so no way is it 2..

[BL!NKEY]

My reply on page 2 kinda says what that is a load of bull.
Whoever wrote that explaination doesnt have a clue on maths.

1.99999 is 1.99999 NOT 2!

Whoever wrote the explanation knows a lot about math and limits and infinity.

STop telling people that you mean 1.99999... they know that they just don't put the dots >.>

But they are two totally different problems.

If people are envisioning 1.999... as 1.99999999999999 with a lot of 9s.

That is not what it is. It is an infinite amount of 9s.

When it is at 1.9999999 it doesnt jump to 2 1.999999 is an acctual number its not just 'Nearly 2' its just as important as any other number so no way is it 2..

The truth is that 1.999... does equal 2.

I just posted this as a question so people would argue and eventually everyone would understand.

It turned out that no one here knows enough about math and infinities to understand.

Read what wikipedia says and you might understand. If you don't believe wikipedia then search google and see the hundreds of reasons why it is true.

http://en.wikipedia.org/wiki/Proof_t...99..._equals_1

This is not a debate, it is cool mathematical thing that is kind of hard to realize at first.

[Aflux]

No, infinite is not a number, a number has to end somewhere - like everything else, it ends.

If it has no ending [which is the definition of infinite] then it's not a number, therefore it does not equal the same as a number, 2, because you're cross-classing things.

[BL!NKEY]

No, infinite is not a number, a number has to end somewhere - like everything else, it ends.

If it has no ending [which is the definition of infinite] then it's not a number, therefore it does not equal the same as a number, 2, because you're cross-classing things.

I am not going to argue with you because I am not some super smart mathematician.

I am just telling you that it is true and you can read about it on wikipedia and other sites.

This is not a debate forum.

We are not talking about the number infinity but a one with an infinite amount of nines after the decimal.

1.24999... with repeating 9s is 1.25

[Wootzeh]

1.24999999... isnt 1.25 because it is 1.24999999... it keeps going, it doesn't go up -.-
It is not true.

[hobo]

i think it is the same.
in a levels maths there was lots of things like this.

it's kind of like how anything to the power 0 should work out as 0, because you're multiplying the number by 0, but it's not, it's 1.
i cba to write out the rule for why, but you use it in pretty much ever second maths equation at a level.

& my teacher did tell us that when something worked out as x.999.... to put it up to the next number because they were the same thing.

[N!ck]

1.99 recurring and 2 are two completely different numbers. That does not mean that they are not equal to each other. Here is the way that I always prove this sort of thing to people.

1.99 recuring is 1.999999............. forever yes?

Call this 1.99 recurring x.

Multiply 1.99 recurring by 10, thus giving you 10x.

x = 1.99999999999999.........
10x = 19.9999999999999........

Now minus x away from 10x leaving behind 9x.

10x = 19.9999999999999........
- x = 1.99999999999999.......

= 9x = 18

If 9x = 18 then x = 2.

But x also = 1.99 recurring .



It's the same concept that that there is only 179.99 recurring degrees in a triangle, making it possible for you to have a two sided triangle .