What does $\mathbb{Z}$ represent? 9e9c91614c6649ac9ff4b20b78870ba1 The set of integers. What does $\mathbb{Q}$ represent? bf4d81e912044154961e68862cb668f1 The set of rational numbers. What does $\mathbb{N}$ represent? 2baa29399a734f41930ffcce9c3e72a7 The natural numbers. What does $\mathbb{R}$ represent? 3f021e0f916545ab94bfa5fe9f8a620a The real numbers. What is an ordinal number? 6a18541efd854ab29bbcfccf06a595fe A number describing a position of something.