On 13/02/13 14:32, Jerry Stuckle wrote: > On 2/12/2013 4:43 AM, Ralf Mardorf wrote: >> Assumed you'll build a fence, 10m long and every 1m there should be 1 >> fence post, how many fence posts do you need? >> > > 11 :) Depends how you interpret the instructions. If it's "you can leave up to 1m hanging without a post", then you only need 9 :-) Richard