Generalpowerpoint The 10/20/30 Rule of PowerPoint Posted 2 January, 20062 January, 2006 nchenga Guy Kawasaki’s 10/20/30 Rule of PowerPoint: a PowerPoint presentation should have ten slides, last no more than twenty minutes, and contain no font smaller than thirty points Share this:EmailTwitterFacebookTelegramSkypeTumblrPocketPrintPinterestWhatsAppLinkedInReddit