C7 (math concept)

C7 generally refers to the seventh category or chapter in a math curriculum or textbook, often related to a specific topic like algebra, calculus, or geometry. Without additional context, it might also denote the seventh level or module in a structured learning program. Essentially, it’s a label used to organize and identify a particular set of math concepts or skills within a broader course or curriculum. If you have a specific subject or context, I can provide a more precise explanation.