Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#2151 2015-10-12 22:55:11
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
27963
"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
#2152 2015-10-13 03:30:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
27976
2 + 7 - 9 + 7 + 6 = 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
#2153 2015-10-13 10:35:31
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
27989
- 2 + 7 + 9 + 8 - 9 = 13
Puzzle:
- TWO - SEVEN + NINE + EIGHT - NINE = 27989
Each letter in the puzzle stands for a different single-digit number from 0 to 9, and the sum of the digits on the left-hand side of the equation is a multiple of 13.
Find the letter values. The puzzle has a unique solution.
Hi Bobby;
The standard forms of your code and rasher's give multiple solutions, but I added some code for the 'multiple of 13' constraint to output just the unique solution for both programs.
Total running times were 2.3 seconds (rasher's) and 60.4 seconds (yours).
Last edited by phrontister (2015-10-13 14:04:06)
"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
#2154 2015-10-13 21:03:32
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
28002
2 + 8 + 0 + 0! + 2 = 13
- 214 - 36869 + 9596 + 65072 - 9596 = 27989
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
#2155 2015-10-24 22:52:37
#2156 2015-10-25 19:37:58
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
Correct, Bobby! 
28028
"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
#2157 2015-10-25 19:38:50
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
28041
2 + 8 + 0 + 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
#2158 2015-10-25 20:35:41
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
28054
"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
#2159 2015-10-26 18:16:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
28067
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
#2160 2015-10-26 19:00:54
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
28080
"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
#2161 2015-10-26 19:19:41
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
28093
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
#2162 2015-10-27 01:23:03
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
28106
The sum of the digits of the sum of all of the main answers that should have been given (and most were) up to and including this post = 13 + 13 + 13.
"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
#2163 2015-10-27 01:58:35
#2164 2015-10-27 10:47:53
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
28132
28 - 13 - 2 = 13
Puzzle:
- TWO - EIGHT - ONE + THREE - TWO = 28132
Each letter in the puzzle stands for a different single-digit number from 0 to 9 (only nine of which are used, including the number 9), and the sum of the sum of the digits on the left-hand side of the equation = 13.
Find the letter values. The puzzle has a unique solution.
Last edited by phrontister (2015-11-01 20:05:14)
"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
#2165 2015-11-01 08:43:29
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
I have a couple of answers but do not understand that the LHS adds up to 13? What do I do with those negative signs?
28145
2 - 8 + 14 + 5 = 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
#2166 2015-11-01 11:12:42
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
28158
Hi Bobby;
Maybe my wording was ambiguous. Anyway, I've fixed it (I hope) by adding "(their 'absolute value')" after "digits".
"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
#2167 2015-11-01 13:47:26
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
28171
Hi phrontister;
How do I handle -458 - 78543 for instance?
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
#2168 2015-11-01 18:40:55
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
28184
Hi Bobby;
M, Rasher's code and your code all evaluate -458 - 78543 as -79001, as do all the calculators I tried it in (including MIF's new Scientific Calculator).
Edit: Oops!! Sorry, Bobby...I made a mistake. The wording should be:
Each letter in the puzzle stands for a different single-digit number from 0 to 9 (only nine of which are used, including the number 9), and the sum of the sum of the digits on the left-hand side of the equation = 13.
I've corrected post #2164.
Last edited by phrontister (2015-11-01 20:07:17)
"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
#2169 2015-11-02 00:32:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
Hi;
- 601 - 38476 - 123 + 67933 - 601 = 28132
28197
2 + 8 + 1 + 9 - 7 = 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
#2170 2015-11-02 00:49:34
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
Yep...got 'im.
28210
2 + 8 + 2 + 1 + 0 = 13
"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
#2171 2015-11-02 00:57:19
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
28223
2 * 8 + 2 - 2 - 3 = 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
#2172 2015-11-02 20:11:36
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,889
Re: Add 13 more and post it forever.
28236
- 2 x 8 +23 + 6 = 13
"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
#2173 2015-11-03 02:13:26
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
28249
28 - 2 - 4 - 9 = 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
#2174 2015-11-03 04:16:16
#2175 2015-11-03 06:31:45
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Add 13 more and post it forever.
28275
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