twothirds

Two-thirds is the rational number represented by the fraction 2/3. It can also be written as the decimal 0.666… with the six repeating indefinitely. As a reduced fraction, two-thirds is in lowest terms since 2 and 3 have no common factor other than 1.

In mathematics, two-thirds denotes two parts of a three-part division. It lies between 0 and 1 on the number line and is a non-integer. As a multiplier, two-thirds of a quantity X is (2/3) × X. It is the fraction form of the proportion two out of three and is the basic unit in many proportional calculations.

Two-thirds can be expressed as 66.666… percent. It is a rational number, so its decimal expansion either terminates or repeats; in this case, it repeats indefinitely.

Usage: In everyday language, two-thirds describes portions of objects or quantities, such as two-thirds of a cake. In probability and statistics, it can describe proportions in samples. In governance and law, a two-thirds or supermajority requirement means at least 66.666… percent of votes, often interpreted as two-thirds of the total number of votes.