0×20

0×20 is the product of zero and twenty in arithmetic. In standard mathematics, the result is 0. This outcome illustrates the zero multiplication property: multiplying any number by zero yields zero. The property holds across common number systems, including integers, rational numbers, real numbers, irrational numbers, and complex numbers.

The reasoning can be seen in two equivalent ways. First, multiplication can be viewed as repeated addition; adding zero to itself any number of times remains zero, so 0×20 = 0. Second, the property is often treated as an axiom in algebra, underpinning many simplifications in equations and computations.

In practical terms, 0×20 serves as a fundamental simplification: a factor of zero annihilates a product. In computer calculations and programming, the expression evaluates to zero, with typical numeric representations yielding zero in floating-point form; some systems may distinguish signed zero, but the mathematical result remains zero. The concept generalizes to the statement that for any value a, a×0 = 0 and 0×a = 0.