1 = .999..... Right?

midnight rain · 07-29-2010, 10:29 PM

So I had an argument with a couple friends about this. They can't be convinced that 1 = .999 repeated

I showed them the Wikipedia proof:

1/9 = 0.11111....

9 * 1/9 = 9 * 0.1111....

1 = 0.99999....

They say that Wiki isn't a reliable source

Anyone want to back me up on this? Just for ****s and giggles.

They kept trying to argue that .9999 doesn't equal one because if you have .99999... it's not the same as having 1 of something. What they don't seem to grasp is that .9999 is a limit.

Any math wizards here?

And crap, I wanted a Yes/No poll on this!

07-29-2010, 10:29 PM	#1 (permalink)
midnight rain Music Addict Join Date: Mar 2009 Posts: 1,711	1 = .999..... Right? So I had an argument with a couple friends about this. They can't be convinced that 1 = .999 repeated I showed them the Wikipedia proof: 1/9 = 0.11111.... 9 * 1/9 = 9 * 0.1111.... 1 = 0.99999.... They say that Wiki isn't a reliable source Anyone want to back me up on this? Just for ***s and giggles. They kept trying to argue that .9999 doesn't equal one because if you have .99999... it's not the same as having 1 of something. What they don't seem to grasp is that .9999 is a limit. Any math wizards here? And crap, I wanted a Yes/No poll on this! Last edited by midnight rain; 07-29-2010 at 10:50 PM.*