Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#551 2010-05-31 22:03:10
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,850
Re: Add 13 more and post it forever.
"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
Offline
#552 2010-05-31 22:37:54
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7176
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#553 2010-05-31 23:05:55
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,850
Re: Add 13 more and post it forever.
Last edited by phrontister (2010-05-31 23:09:02)
"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
Offline
#554 2010-05-31 23:30:51
- ZHero
- Real Member
- Registered: 2008-06-08
- Posts: 1,889
Re: Add 13 more and post it forever.
Last edited by ZHero (2010-05-31 23:59:24)
If two or more thoughts intersect, there has to be a point!
Offline
#555 2010-06-01 02:36:07
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7215 = 13^2 + 13^2 + 46^2 + 69^2
7215 = 5^3 + 5^3 + 5^3 + 14^3 + 16^3
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#556 2010-06-01 02:55:12
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,850
Re: Add 13 more and post it forever.
"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
Offline
#557 2010-06-01 03:24:21
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7241
( 7 + 2 + 4 ) * 1 = 13
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#558 2010-06-01 10:19:57
- skymus
- Member
- Registered: 2007-03-06
- Posts: 16
Re: Add 13 more and post it forever.
7254 n = Post# = 558 (see top right)
Pascal Triangle
Last edited by skymus (2010-06-04 12:19:17)
Playful Math: Even Double
Aim to Win-Win
ArtuM101Options
Offline
#559 2010-06-01 15:18:32
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,850
Re: Add 13 more and post it forever.
"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
Offline
#560 2010-06-01 15:24:21
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7280
7280 first appears at
7 + 8 - 2 + 0 = 13
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#561 2010-06-01 21:02:27
- ZHero
- Real Member
- Registered: 2008-06-08
- Posts: 1,889
Re: Add 13 more and post it forever.
If two or more thoughts intersect, there has to be a point!
Offline
#562 2010-06-02 03:21:35
- skymus
- Member
- Registered: 2007-03-06
- Posts: 16
Re: Add 13 more and post it forever.
7306, n = Post # = 562
Let play the numbers as
Let's come back for a minute to 5-year old discovery 1 + 3 + 5 = 3*3
We explored it in a separate topic: 1+3=2^2 etc. and came to the following:
X1 + X2 + X3+
+ Xn = a * b in the post,
where a = (X1 + Xn) / 2, b = n.
In finite series X(n+1) = X1 + n * d, where d = X2 - X1
In our case we know k = 561 numbers and want to find 562th which is k+1 = 562, d = 26 - 13 = 13:
and
Few hands-on examples:
Ex: 1 + 3 + 5 = (1 + 5) / 2 * 3, n = 3, X(n+1) = 1 + 3 * 2 = 7
Ex: 3 + 6 + 9 + 12 = (3 + 12) / 2 * 4, n = 4, X(n+1) = 3 + 4 * 3 = 15
Ex: 13 + 26 + 39 + 52 + 65 = (13 + 65) / 2 * 5, n = 5, X(n+1) = 13 + 5 * 13 = 78
A SLICE OF PI
******************
3.14159265358979
1640628620899
23172535940
881097566
5432664
09171
036
5
from Math Humor
Last edited by skymus (2010-06-04 11:55:32)
Playful Math: Even Double
Aim to Win-Win
ArtuM101Options
Offline
#563 2010-06-02 04:25:56
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,850
Re: Add 13 more and post it forever.
Nice assortment there, ZHero! 
But I think #3 is missing the ceiling function:
Here's another for your collection:
=======================================
Last edited by phrontister (2010-06-02 05:41:33)
"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
Offline
#564 2010-06-02 07:13:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#565 2010-06-02 22:35:45
- ZHero
- Real Member
- Registered: 2008-06-08
- Posts: 1,889
Re: Add 13 more and post it forever.
Nice assortment there, ZHero!
But I think #3 is missing the ceiling function:
Here's another for your collection:
THANKS!! 
___________________________________________________
___________________________________________________
skymus: Your avatar is simply smashing!!! 
If two or more thoughts intersect, there has to be a point!
Offline
#566 2010-06-03 05:09:15
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7358
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#567 2010-06-03 05:26:47
- skymus
- Member
- Registered: 2007-03-06
- Posts: 16
Re: Add 13 more and post it forever.
skymus: Your avatar is simply smashing!!!
Animated avatars of ZHero and bobbym encouraged me to find a dynamic one
_________________________
7371 n = Post # = 567
Let's play the numbers as finite series:
In finite series , where d = X2 - X1
In our case we know k = 566 numbers and want to find 567th which is k+1 = 567, d = 26 - 13 = 13:
and
To celebrate an equation of the 5-year old kid 1+ 3 + 5 = 3*3 we play it for 13:
Last edited by skymus (2010-06-04 12:01:15)
Playful Math: Even Double
Aim to Win-Win
ArtuM101Options
Offline
#568 2010-06-03 05:32:04
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7384
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#569 2010-06-03 13:56:32
- John E. Franklin
- Member
- Registered: 2005-08-29
- Posts: 3,588
Re: Add 13 more and post it forever.
7397
igloo myrtilles fourmis
Offline
#570 2010-06-03 14:06:27
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7410 = 13^2 + 29^2 + 80^2
7410 = 6^3 + 7^3 +9^3 + 12^3 + 13^3 + 13^3
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#571 2010-06-03 21:44:34
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,850
Re: Add 13 more and post it forever.
Last edited by phrontister (2010-06-03 21:54:48)
"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
Offline
#572 2010-06-03 23:07:24
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7436
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#573 2010-06-04 00:19:19
- ZHero
- Real Member
- Registered: 2008-06-08
- Posts: 1,889
Re: Add 13 more and post it forever.
If two or more thoughts intersect, there has to be a point!
Offline
#574 2010-06-04 10:43:35
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
7462
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#575 2010-06-04 17:50:59
- ZHero
- Real Member
- Registered: 2008-06-08
- Posts: 1,889
Re: Add 13 more and post it forever.
If two or more thoughts intersect, there has to be a point!
Offline