In the following questions, you’ll find three short texts, each describing a different concept of a scientific discipline. The three concepts are connected with each other by a prerequisite relation: in order to understand concept X you need to know concept Y and in order to understand concept Y you need to know concept Z. Unfortunately, the three texts are not correctly ordered. Your goal is to read the texts and order them correctly based on the learning precedence of the concepts they describe.

Please, create your ordering based on your understanding of the texts' content. The way a concept is presented affects its learning dependencies with respect to other concepts, so we ask you to order the texts based solely on what you read. This might be particularly difficult for some questions considering that a text might describe a concept that you know already. To help you avoiding the influence of your background knowledge,  the name of concepts in the texts have been covered by masks. Please, don't try to guess which concept is hidden behind the mask: remember that this is not the goal of the task and that, by doing so, you could create an ordering based on your prior knowledge about the topic rather than on the texts' content.

Before starting, consider the following three texts as an example and try to order them. The solution is provided below.

Text A: j7o is one of the four elementary mathematical operations of q48, with the others being addition, subtraction and division.
Text B: 3s0 is a mathematical operation, written as b^n, involving two numbers, the base b and the exponent or power n. When n is a positive integer, 3s0 corresponds to repeated j7o of the base.
Text C: q48 is a branch of mathematics that consists of the study of numbers, especially the properties of the traditional operations on them - addition, subtraction, j7o and division.