MS Power Point
To maintain the perspective (height and width ratio) of an object when resizing, you need to

Press and hold the shift key while dragging a corner sizing handle
Press and hold the shift key while dragging a corner sizing handle & Drag a corner sizing handle
Press and hold the alt + ctrl keys while dragging a middle handle
Drag a corner sizing handle

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MS Power Point
You have got a bunch of digital holiday photo you want to put into a slide show. What the quickest method?

On the insert menu, point to the picture, click from file, and select your picture in a group for each slide
On the insert menu, point the picture and click new photo album
Apply a multiple-picture layout to several slides, and use the clipart icon on the slides to import your picture
All of the listed here

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MS Power Point
What is the use of Researching Timings?

There is no such option in PowerPoint
This option allows you to rearrange slides
This option allows you to rehearsal of slide presentation
This option allows you to set the time of animations

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