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#1 2013-05-23 12:59:05

mathaholic
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From: Juliania
Registered: 2012-11-29
Posts: 2,842
Website

Make 9,999 using 9 nines

Can you do that? Good luck!


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#2 2013-05-23 13:09:02

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#3 2013-05-23 16:10:38

{7/3}
Member
Registered: 2013-02-11
Posts: 210

Re: Make 9,999 using 9 nines

999*(9+9/9)+9*9/9


There are 10 kinds of people in the world,people who understand binary and people who don't.

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#4 2013-05-23 17:14:11

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#5 2013-05-23 18:33:57

{7/3}
Member
Registered: 2013-02-11
Posts: 210

Re: Make 9,999 using 9 nines


There are 10 kinds of people in the world,people who understand binary and people who don't.

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#6 2013-05-23 19:25:54

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,842
Website

Re: Make 9,999 using 9 nines

:clap


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#7 2013-05-23 20:08:33

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#8 2013-05-23 21:09:34

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,843

Re: Make 9,999 using 9 nines

Hi Bobby,

Your last solution has only eight nines.

W|A didn't like that one (can't think logically, I suppose).

M first said "General::ovfl: Overflow occurred in computation", but then it gave the answer 9999 anyway.


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#9 2013-05-23 21:16:53

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,842
Website

Re: Make 9,999 using 9 nines

Bravo! Bravo!

slow-clap-gif-2.gif


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#10 2013-05-23 21:26:25

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines

Hi;

Yes, it did look like there were only 8 nines there. I changed it.

He was right to say overflow but of course yours is right too.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#11 2013-05-23 22:42:43

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,843

Re: Make 9,999 using 9 nines


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#12 2013-05-23 22:52:45

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#13 2013-05-23 23:12:09

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,843

Re: Make 9,999 using 9 nines


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#14 2013-05-23 23:19:23

{7/3}
Member
Registered: 2013-02-11
Posts: 210

Re: Make 9,999 using 9 nines


There are 10 kinds of people in the world,people who understand binary and people who don't.

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#15 2013-05-23 23:21:23

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,843

Re: Make 9,999 using 9 nines


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#16 2013-05-23 23:22:54

{7/3}
Member
Registered: 2013-02-11
Posts: 210

Re: Make 9,999 using 9 nines

9999=min(9999,99999)


There are 10 kinds of people in the world,people who understand binary and people who don't.

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#17 2013-05-23 23:28:23

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#18 2013-05-24 01:22:21

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,843

Re: Make 9,999 using 9 nines

Last edited by phrontister (2013-05-24 04:46:50)


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#19 2013-05-24 02:24:30

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines

9(9-9+9999/√9/√9)=9999


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#20 2013-05-24 04:28:54

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,843

Re: Make 9,999 using 9 nines

Last edited by phrontister (2013-05-24 04:30:37)


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#21 2013-05-24 08:11:10

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines

9999 occurrs in the 999999999 we are using.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#22 2013-05-24 11:27:00

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,843

Re: Make 9,999 using 9 nines

Why, so it does! How did you do that?


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#23 2013-05-24 19:38:58

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,598

Re: Make 9,999 using 9 nines


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#24 2013-05-24 22:29:59

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,843

Re: Make 9,999 using 9 nines

Last edited by phrontister (2013-05-24 22:30:15)


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#25 2013-05-26 14:18:13

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,842
Website

Re: Make 9,999 using 9 nines

9*9=81 (2 nines)
81*99=8,019 (4 nines)
8,019+(99*9)=8,910 (7 nines)
concat(8+1,9+0),(9,9) (9 nines)

Horray! 9,999 using 9 nines!


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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