how many slides for a 20 minutes presentation

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1. How many slides in a 20-minute presentation?

   

2. How many slides in a 20-minute presentation?

   

3. How many slides in a 20-minute presentation?

   

4. How Many Slides for a 20-Minute Presentation?

   

5. How many slides in a 20-minute presentation?

   

6. How many slides for a 20 minute presentation