What report or reports has a limit of 30 columns?

Question: What report or reports has a limit of 30 columns?
 
Keywords:
--Verify that you are unable to add 31st column in Report Builder     
--Verify that when you try to add 31st column, you get this message:     
"For performance reasons, you cannot create a report with more than 30 columns."
 
 
Answer: All reports (Recent, Saved, Financial, Other Standard Reports) except for report results to include more than 30 columns as a result of matrix columns added in run time. In the footer of most summary reports, a Column dropdown is available that allows you to transform a standard report into a matrix, or crosstab, report. A matrix-style report has a variable number of columns depending on the selection you make in the Column dropdown.