In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation or an algebraic expression. In simple words, a variable is a quantity that can be changed and is not fixed. …

One of the variables, N, the number of particles, is a positive integer (and therefore a discrete variable), while the other three, P, V and T, for pressure, volume and temperature, are continuous variables.

Jul 23, 2025 · A variable is like a placeholder or a box that can hold different values. In math, it's often represented by a letter, like x or y. The value of a variable can change depending on the situation. …

Illustrated definition of Variable: A symbol for a value we don't know yet. It is usually a letter like x or y. Example: in x + 2 = 6, x is the variable....

What is a variable? Variables in math are symbols, often letters, that represent different values in various situations. They help us understand and solve problems with changing values.

What Is Variable in Maths? A variable in maths is a symbol, usually a letter such as x, y, or n, that represents an unknown or changeable value. Variables are found in many areas of mathematics, …

In algebra, a variable is usually a letter or other symbol that stands for a number or quantity that may vary. Variables can also be used to represent functions as well as quantities in other mathematical …

May 28, 2025 · The variable is an indispensable concept in mathematics and its applications. Its ability to represent changing quantities or unknowns allows for the formulation and solution of a vast range …

In mathematics, a variable is like a placeholder. It is a symbol, usually a letter such as x, y, a, b, or n, that we use to represent a number whose value is not known or may change. The word “variable” …

A variable is independent if you get to pick its value; it's dependent if all you can do is solve for its one fixed value. In other words, a "dependent" variable is one whose value has already been determined …