You should give your ten slides in twenty minutes. If you must use more than ten slides to explain your business, you probably don’t have a business. (The only difference between you and venture capitalist is that he is getting paid to gamble with someone else’s money). Ten is the optimal number of slides in a PowerPoint presentation because a normal human being cannot comprehend more than ten concepts in a meeting-and venture capitalists are very normal.
This rule is applicable for any presentation to reach an agreement: for example, raising capital, making a sale, forming a partnership, etc. It’s quite simple: a pitch should have ten slides, last no more than twenty minutes, and contain no font smaller than thirty points. I am evangelizing the 10/20/30 Rule of PowerPoint.