21×0

21x0 refers to a mathematical expression involving multiplication. The expression consists of the number 21 and the number 0, connected by the multiplication operator. In mathematics, any number multiplied by zero results in zero. This is a fundamental property of arithmetic known as the zero property of multiplication. Therefore, the result of 21x0 is 0. This principle applies to all real numbers and is a cornerstone of algebra and number theory. Understanding this property is crucial for solving equations and simplifying expressions. The concept is often introduced early in mathematical education to establish basic arithmetic rules. The outcome of 21x0 is consistently zero, regardless of the magnitude or nature of the non-zero number involved.