How long should Slides be in a slideshow?

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Tags

1. #slide
2. #depending
3. #setting
4. #people
5. #seconds
6. #translates
7. #means
8. #pictures
9. #photos
10. #watch
11. #great
12. #minute
13. #which
14. #minutes
15. #reason
16. #story
17. #minimum
18. #image
19. #images