Phone number puzzle from 2000

Non-D-Day related topics.
Post Reply [phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable
User avatar
Bill Stokes
Developer
Developer
Posts: 754
Joined: Sun Aug 17, 2003 9:36 am
Location: Pompey, England.
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable

Phone number puzzle from 2000

Post by Bill Stokes » Fri Sep 16, 2016 1:50 pm

I read about this years ago, and knocked up a perl script to do it on line 16 years ago - resurrected this year.

I can do it my head, and goes down well in pubs etc. (if people can subtract correctly, which alas today seems an almost impossible thing for people to do without a calculator!).

https://linicks.net/ptrick.html

Nick

Post Reply [phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275: count(): Parameter must be an array or an object that implements Countable