answers to technical interview questions: an interesting page full of logic type puzzles, link was via Joel on Software. If you want a magical reference it contains the Card Trick without the trick. I wonder if this is the solution to Pick Five Cards that I posted back in March, and also the new palm program from sharperminds About Face an online version of which can be found here Online About Face. Unfortunately I am not that mathematically minded but I will try and work it out, if anyone would like to use the comments link for this post and let me know?