Variables

In general knowledge, a variable is a symbol or placeholder used to represent a value that can change or vary. It is commonly found in mathematics, science, and programming. For instance, in an equation, a variable might stand for a number that is not fixed; instead, it can take on different values depending on the context. Variables help us formulate general principles, make predictions, and solve problems by allowing us to analyze how different factors interact with one another. Essentially, they are tools that help us understand and describe the world around us.