CPM Forum

General => General Forum Comments => Topic started by: Archey80 on November 29, 2006, 01:31:14 pm

Title: 2 digit radars do I have all the numbers?
Post by: Archey80 on November 29, 2006, 01:31:14 pm

Hey all I am trying to find out all the possibilities for 2 digit radars with the numbers 0's and 5's I need some help to make sure I have them all I am sure I am missing many any help is welcome. Thanks Arthur

0005000
0050500
0500050
5000005
0555550
0550550
5550555
5050505
5005005
0505050
5500055
5505055
0055500
5055505

Thanks  YuMan, Mikeysonfire

Title: Re: 2 digit radars do I have all the numbers?
Post by: YuMan on November 29, 2006, 01:54:35 pm

Arthur:
0055500
5055500

I believe the 3rd line should be 0500050

Any others???

Yuman

Title: Re: 2 digit radars do I have all the numbers?
Post by: Mikeysonfire on November 29, 2006, 02:40:58 pm

You need 5055505.  ;)

Title: Re: 2 digit radars do I have all the numbers?
Post by: BWJM on November 29, 2006, 03:22:24 pm

That's all of them.

Title: Re: 2 digit radars do I have all the numbers?
Post by: Archey80 on November 29, 2006, 03:37:53 pm

Thanks All now the hard part finding them all. :-?


Arthur

Title: Re: 2 digit radars do I have all the numbers?
Post by: Mikeysonfire on November 29, 2006, 04:05:07 pm

I will keep my eyes open for you.  8-)

Title: Re: 2 digit radars do I have all the numbers?
Post by: Seth on November 29, 2006, 09:35:23 pm

Glad you figured it out, but the easiest way is to just consider the last three numbers and sort them from lowest to highest:

000
005
050
055
500
505
550
555

That's eight.  From there it's easy to construct the "general case" radar:

000x000
500x005
050x050
550x055
005x500
505x505
055x550
555x555

Just replace the x with either zero or five, and you have sixteen possibilities.  Then subtract the 0000000 and 5555555 note and you have fourteen left.  :)