Maths
 

What's wrong with this logic?

Re: Maths
 

I hate Maths!!!! Its just too clever for it's own good!

Re: Maths
 

Makes sense to me ? :smt045

Dan

Re: Maths
 

just looks like an attempt to justify why all our bills are now rounded up or down based on a 3 decimal point system.

i'm sorry but i spend my pennies in 2 decimalplaces so why are my bills calculated to 3?????

Anyone?

Re: Maths
 

to charge you more without you knowing about it.

Re: Maths
 

Afternoon all.

If a = 0.999999 then 9a= 8.999991 which divided by 9 makes a .999999.

Decimal places my dear:D

Cheers.

I wonder how many are grabbing a calculator after reading this:D

Cheers.

Re: Maths
 

It's NOT logic at all - just incorrect maths !!

a = 0.999 is correct

10a = 9.999 is incorrect

10a = 9.99

Therefore 10a - a 9.999 - 0.999 is incorrect it should read 9.99 - 0.999

which then gives the correct answer 8.991

Simple really :cool:

Re: Maths
 

Super, you missed the "..." after the 999 ;)

Re: Maths
 

A calculator? No.

My poor aching brain on the other hand...

Re: Maths
 

WWWWAAAAAYYYYYYY over my head that one!!

Re: Maths
 

You missed the crucial ... which means literally "and so on" and is used to show a repeating pattern, in this case 0.999999999999999999999999999999999 (recuring to infinity)

Work is out again with this crucial difference and the linked page is quite correct

Re: Maths
 

Mine was aching too, so I cheated & grabbed my calculator!:D

Cheers.

Re: Maths
 

Exactly! Which is why Spannerman's explanation doesn't add up either.

Re: Maths
 

My maths is only incorrect if you accept the concept of infinity.

Personally I don't - to everything there must be an end.

Moving on - if there is an end, then 10a - a will always result in 8 followed by a finite number of 9's and the final number will be a 1

Re: Maths
 

You can't do maths without infinity.

Re: Maths
 

you cant do complex maths with out infinity, everyday stuff you can!

Re: Maths
 

That's a shame, how do you show 1/3 in decimal form then? ;)

Re: Maths
 

im having hotdogs for tea

Re: Maths
 

Even not terribly complex maths needs infinity, but I get your point. I was meaning proper maths not just adding up and taking away.

Re: Maths
 

I like this other proof that 0.999...... = 1

1/3 = 0.333...

3 x 1/3 = 1

3 x 0.333... = 0.999...

therefore 0.999... = 1

:D

I love maths :D

Re: Maths
 

:cool:

Re: Maths
 

I can & do, I always round UP customers bills to the nearest £100....Works for me!:D

Cheers.

Re: Maths
 

Thanks for finding that site Sarah, I love things like that, I particularly like this example of wrong maths

http://farm2.static.flickr.com/1171/...7117cbbe_m.jpg

Re: Maths
 

Glad you like it. That's a really good one!!

Re: Maths
 

'Adding up and taking away' is proper maths for most of us. We deal in real things not some airy fairy theoretical maths to prove the existance of something or other.

Whole numbers rule!:smt077

Re: Maths
 

Whatever :rolleyes:

Re: Maths
 

That's quite correct ... 0.999... (which means the 9 recurs to inifinity) is as close to 1 as possible that if you use finite maths they are equal.

Well that's my take on it :rolleyes:

Really wanna head-hurting moment?

Read this then

Maths is fun :D

Re: Maths
 

"Infinity is an abstract concept designed to appease those without the determination or ability to discover the finite limit"

Re: Maths
 

Not entirely relevant, but made me giggle:

Q: Why did the computer scientist die in the shower?
A: Because he read the instructions on the shampoo bottle: Lather, Rinse, Repeat.

Re: Maths
 

I'm having a finite number of meatballs for mine:smt045

Re: Maths
 

Ohh quotes!

"The only way to comprehend what mathematicians mean by Infinity is to contemplate the extent of human stupidity." Voltaire

Or, and I believe this one will finish the discussion:





"To infinity, and beyond!" Buzz Lightyear

Re: Maths
 

Haha ... a classic example of a self-recursive algorithm :geek:

Re: Maths
 

Man then went on to prove that black was white and got killed on the next zebra crossing...
Douglas Adams

Re: Maths
 

I'm having one of those microwave meals for 0.999... :p

Re: Maths
 

I'd quote Douglas Adams about why the population of the universe is zero, but I don't think my boss would appreciate me doing it now.

Re: Maths
 

Genuine lol.

I love this thread.

Re: Maths
 

Don't you find that your anorak flutters in the breeze when you're on your bike?:D

Re: Maths
 

Oooh, bitchy!!

Re: Maths
 

I like cake?

Re: Maths
 

If I have 3 cakes, I eat one and the other one is given to my mate Scott...



How annoyed am I!