Modifying spreadsheets

Computing

Which format is best for the data held in a column with the data heading Discount?

Which format is best for the data held in a column with the data heading Number of items sold?

Which of these would make suitable column headings in a spreadsheet for a local supermarket? (Tick all that apply)

Which number format has been applied to this piece of data?  12:05:00

What are the headings in this spreadsheet?

What is the third data heading in the table?

What is the  most expensive fruit on the spreadsheet?