Which of the following is not a type of digital signature? a. Approval Signatures
b. Non-Certified Signatures
c. Visible Digital Signature
d. Invisible Digital Signature

Match the following errors with their definitions. a. #name b. #value c. #ref d. 1. when a formula produces output that is too lengthy to fit in the spreadsheet cell 2. when you enter an invalid cell reference in a formula 3. when you type text in cells that accept numeric data 4. when you type in a cell reference that doesn’t exist