Formula Help

[Michelle]

I have a column that I want to read "MB-1", "MB-2" and so on. I want the
numbers to automatically increase. Is there a formula to do this?

 

[Mike H]

Michelle,

Are those quotes real or does the cell actually contain MB-1 with no quotes.
If the latter simply drag it down and the number will increment. If not then
post back.

Mike