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#1 2009-12-30 07:00:13
- menobody
- Guest
a puzzle
Using all the digits from 1 to 9 only once, make two whole numbers one of which is double the other.
#2 2009-12-30 08:08:42
- Devantè
- Real Member
- Registered: 2006-07-14
- Posts: 6,400
Re: a puzzle
9327 and 18654
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#3 2009-12-30 11:07:39
- menobody
- Guest
Re: a puzzle
Thank you!
do u just use trial and error?
or is there a mathematical way to find this?
#4 2009-12-30 19:41:23
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: a puzzle
Hi menobody;
No mathematical way that I know of but since this is an alphametic problem you can use simple logic: What you are really trying to solve is this:
A B C D
+ A B C D
--------------
E F G H I
E has to be a 1 and I has to be a 2,4,6, or 8. A has to be greater than 4 and so on.
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.
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#5 2009-12-31 04:49:23
- hemant-pandey@in.com
- Member
- Registered: 2009-12-29
- Posts: 1
Re: a puzzle
Can you make 1000 using 9999 using each digit only once.
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#6 2009-12-31 08:51:28
- soroban
- Member
- Registered: 2007-03-09
- Posts: 452
Re: a puzzle
Hello, hemant-pandey@in.com!
Can you make 1000 using 9999 using each digit only once?
.
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