The term 'Whole Quantity or Number (of)' can be represented by the three-letter acronym 'ALL'. This acronym is used to refer to a complete amount or number of something, such as a group of people, objects, or ideas. It is often used to emphasize that all members of a group are included in a statement or action. For example, one might say 'We are all going to the beach' to indicate that everyone in the group is included in the plan.