http://mathpuzzlewiki.com/api.php?action=feedcontributions&feedformat=atom&user=Oscar+test 2026-04-03T20:04:13Z User contributions MediaWiki 1.44.0 http://mathpuzzlewiki.com/index.php?title=Ants_on_a_log&diff=1334 2014-11-09T02:59:57Z

<p>Oscar test: Created page with &quot;Here is a version of a very nice puzzle I first saw in {{Winkler book}} ==Puzzle== Thirteen ants are standing on a 1 meter long log, each facing one of the two ends. A bell...&quot;</p> <hr /> <div>Here is a version of a very nice puzzle I first saw in {{Winkler book}}<br /> <br /> ==Puzzle==<br /> <br /> Thirteen ants are standing on a 1 meter long log, each facing one of the two ends. A bell sounds and all the ants start marching in whichever direction they were looking, traveling at a speed of exactly 2 meters per minute. Of course some of the ants will soon run into each other - if this happens, they will instantly turn around and continue marching in the opposite direction. When an ant comes to the end of the log, they will jump of the end.<br /> <br /> How long before you can be sure that every ant has jumped off the log?</div>

Oscar test