The phrase "same number" refers to a quantity or amount that is equal to another quantity or amount. It can be used in various contexts, such as mathematics where it means having the same value or result when performing an operation like addition, subtraction, multiplication, or division. In everyday language, it could mean possessing the same count, measure, or measurement of something. For example, two objects that have the same number of holes would be considered interchangeable because they are equivalent in terms of their functionality and usability.