MS Power Point
How do you add degrees of transparency to shapes such as arrows, so that the slide background shows though?

Use the Set Transparent Color button on the Picture toolbar
All of above
Use #D style 4 button on the drawing toolbar
Use the Transparency slider in the Format AutoShapes dialog box

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MS Power Point
What is the use of Researching Timings?

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

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