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 View from Perplexus Tower (Posted on 2006-04-27)
Levik has invested a lot in real estate, and now owns all the land on one side of Flooble Blvd, ending with his very own Perplexus Tower. He now has 10 clients who each want to lease some land in order to build.

Each client plans to build something with a different number of stories from 1 to 10. Levik wants to be able to see all these buildings from the top of Perplexus Tower. This is impossible if any building is immediately behind another that is two or more stories higher.

In how many different orders can Levik lease the narrow strip of land to his 10 clients? What if, after building Perplexus Tower even higher, buildings can only be obscured if the one directly in front of it is three or more stories higher? Four? More?

 See The Solution Submitted by Tristan Rating: 4.0000 (2 votes)

 Subject Author Date Interesting variant - numbers snark 2006-05-02 23:19:23 re: Interesting Variant Solution for 2 stories blocked, stories > 2 challenge Tristan 2006-05-01 18:35:36 Interesting Variant Solution for 2 stories blocked, stories > 2 challenge juju 2006-05-01 16:29:37 re: interesting variant Charlie 2006-04-28 10:33:57 re: Interesting variant of problem Tristan 2006-04-27 21:56:49 Interesting variant of problem juju 2006-04-27 18:35:26 The rest of them. Jer 2006-04-27 13:06:05 First part, alternate expl. Jer 2006-04-27 12:55:14 Solution to first part tomarken 2006-04-27 10:10:21

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