Another approach to getting keys

[Andrew Buc]

On Saturday, July 29, 2006, at 07:37  PM, Huw Powell wrote:

> One thing to keep in mind is that there are only 5 different height 
> tumblers in these locks, and there are 7 (I think) of them

So if I'm figuring this right, there are 5^7 = 78,125 possible 
keys--not counting ones that would be unlikely to be made, such as with 
all tumblers at the same height.