Question

how can you view all the slide of your presentation simultaneously​

Answer 1

Answer: Go to the View Ribbon and click on the Slide Sorter icon

Explanation:

Go to the View Ribbon and click on the Slide Sorter icon (or click on the icon in the Status Bar). This view allows you to view multiple slides at once; click, hold, and drag the slide over to where you want the slide positioned, and then let go of the mouse button.