👉 The term "ninetieth" is often used in mathematics and logic to denote a sequence of numbers that are successive multiples of 10. For example, if you have a list of numbers from 1 to 20, the sequence would be 10, 20, 30, 40, 50, 60, 70, and so on.
In this context, "ninetieth" refers to the position or number in
ninetieth