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Mathtastic (Original Post) ashling May 2014 OP
Those drinkers should know their limits (nt) pokerfan May 2014 #1
Is that rational? n/t intaglio May 2014 #7
Which is integral to a good joke... (nt) pokerfan May 2014 #8
I don't get it. femmocrat May 2014 #2
They'll never have more than two beers total Ron Obvious May 2014 #3
Are they supposed to serve themselves from the second glass? femmocrat May 2014 #4
Series and limits Ron Obvious May 2014 #5
Thanks for trying.... femmocrat May 2014 #6
I'm a visual learner pokerfan May 2014 #11
No.. Ron Obvious May 2014 #12
My favorite part is where ashling May 2014 #9
In this case never quite reach 2 pokerfan May 2014 #10
Now you're just splitting hairs ashling May 2014 #13
 

Ron Obvious

(6,261 posts)
3. They'll never have more than two beers total
Sun May 11, 2014, 02:15 PM
May 2014

Because this infinite series will approach 2 but never exceed 2 (or indeed reach 2), even with an infinite number of mathematicians.

 

Ron Obvious

(6,261 posts)
5. Series and limits
Sun May 11, 2014, 02:30 PM
May 2014

Well, if you're going to be practical about it, I think the infinite number of mathematicians are going to be rather awkward to accommodate in the first place.

In maths, this would describe a series and a limit. I can't do it justice here, but it would be something like limit ( n=0, n ->∞ ) 1 + 1 1/2 + 1 1/4 + ... + 1 1 / 2 ^ n) = 2

Meaning that the limit of this infinite series (n approaches infinity) is 2.

pokerfan

(27,677 posts)
11. I'm a visual learner
Sun May 11, 2014, 03:02 PM
May 2014

so I gravitate toward pictures....



I can intuitively see that 1/2 + 1/4 + 1/8 + 1/16 + ... adds up to 1. That plus the initial beer makes it 2.

You can see the more rigorous proof here. And on that note, we're done learning for the day:

 

Ron Obvious

(6,261 posts)
12. No..
Sun May 11, 2014, 03:12 PM
May 2014

No, I'm just a retired computer programmer who only discovered how much fun maths could be after leaving school. Possibly like you, I never really had a good maths teacher, but the fault was largely mine. I would just sit in the back row of the class, scowling and fantasising about being anywhere else.

When I started computer programming, the love and affinity for logic and maths came along as a bonus.

pokerfan

(27,677 posts)
10. In this case never quite reach 2
Sun May 11, 2014, 02:54 PM
May 2014

Sure. Mathematically, it's equal to 2 but the physical chemist will point out that at some point there will be just one molecule left. /pedant

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