Ask a rhetorical question

While it is not always advisable to leave your audience hanging, suspense can be a terrific method to create a memorable ending if used correctly. Finish with a question that they can ponder about after the presentation to keep them thinking about what you've said. Keep it relevant to your topic and utilize it to highlight a point you want to make.

View Scott Dinsmore's TEDx lecture, "How to Find and Do Work You Love." In his presentation, he talked about figuring out what is important to us and then doing it. In his conclusion, he asked the audience, "What is the work you can't do?"

This conclusion is also useful if you know you will be following up with a second presentation that will answer the question. Pose a thought-provoking topic, then indicate that you will answer it in your next presentation to give them something to look forward to.