Is the address 7b invalid regarding cell references? I just need it for a test
Valid/not valid

How can a broadcast station be received through cable and satellite systems?

Drag each label to the correct location on the imagelist the do’s and don’ts of safeguarding your password.keep yourself loggedin when you leave your computer.don’t write your password down and leave it whereothers can find it.share your password with your friends.each time you visit a website,retain the cookies on your computer.use a long password with mixed characters.

In which part of a professional email should you try to be brief, but highly descriptive?