Xref: utzoo sci.math:5773 rec.puzzles:2882 comp.lsi:652 Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!quanta.eng.ohio-state.edu!parts.eng.ohio-state.edu!abali From: abali@parts.eng.ohio-state.edu (Bulent Abali) Newsgroups: sci.math,rec.puzzles,comp.lsi,alt.sex Subject: Re: The 3 inverter problem Message-ID: <1458@quanta.eng.ohio-state.edu> Date: 21 Feb 89 20:48:18 GMT References: <13619@obiwan.mips.COM> <8216@watcgl.waterloo.edu> <1827@valhalla.ee.rochester.edu> Sender: news@quanta.eng.ohio-state.edu Reply-To: abali@parts.eng.ohio-state.edu (Bulent Abali) Followup-To: rec.puzzles Organization: Ohio State Univ, College of Engineering Lines: 47 In article <1827@valhalla.ee.rochester.edu> badri@valhalla.ee.rochester.edu (Badri Lokanathan) writes: >On a rather risque note, it is about as useful as the reusable condom >puzzle: (Hit n if you are easily offended!) >3 men want to make love to 1 woman. Here are the assumptions: >(1) There should be no direct genital contact to avoid disease transmission. >(2) There is a supply of "reusable" condoms with the restriction that > a dirtied surface may not be used by a different person. > >What is the minimum number of condoms required? >Spoiler hint: >Simultaneous use of multiple condoms. The solution of the "condom-puzzle" at the EE bull-pan at Ohio State: Two condoms A and B are used (by using 2 at the same time) : +-------+ +-------+ +-------+ | | |*******| |*******| | +-+ | |* *| |**+-+**| | |*| | |* *| |**| |**| | |*| | |* *| |**| |**| | |*| | |* *| |**| |**| | |*| | |* *| |**| |**| A B A A B (B dirty inside) (A dirty inside) ( B flipped inside out) Man 1 Man 2 Man 3 Q.E.D. How about generalizing it to m men, w women, k condoms? Followups to rec.puzzles. Sincerely, B. Abali and R. Daoud (researchers extraordinaire) -=- Bulent Abali Ohio State Univ., Dept.of Electrical Eng. 2015 Neil Av. Columbus, Ohio 43210 abali@baloo.eng.ohio-state.edu