Re: Google's aptitude test equation

*To*: mathgroup at smc.vnet.net*Subject*: [mg55060] Re: Google's aptitude test equation*From*: "Lorenzo Castelli" <gcastelli at NOSPAMracine.ra.it>*Date*: Fri, 11 Mar 2005 04:20:34 -0500 (EST)*References*: <200503091134.GAA06997@smc.vnet.net> <d0p814$j56$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

"DrBob" <drbob at bigfoot.com> wrote in message news:d0p814$j56$1 at smc.vnet.net... > Here's a minor rewrite: > [...] Much nicer solution, thanks. > As for Reduce, it can't check even ONE of the 449 solutions: Yeah, it looks like the evaluation time grows exponentially with the number of variables in the inequality: Table[ First@Timing@Reduce[First@sol && Unequal @@ Take[vars, i]], {i, 2, 8} ] ListPlot[% /. Second -> 1, PlotJoined -> True] {0.016 Second, 0. Second, 0. Second, 0.031 Second, 0.141 Second, 1.515 Second,15.532 Second} -- Lorenzo Castelli E-Mail: gcastelli at racine.ra.it

**References**:**Google's aptitude test equation***From:*"Lorenzo Castelli" <gcastelli@NOSPAMracine.ra.it>