5/2 is element whole number

Under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

These factors limit the ability to attach files to e-mail messages. location of sender recipient's ability to open file size of file type of operating system used

In microsoft word, when you highlight existing text you want to replace, you're in              a.  advanced mode.    b.  automatic mode.    c.  basic mode.    d.  typeover mode