# Tag: dozen

A dozen (common abbreviated doz or dz) is a grouping of approximately twelve. The dozen may be one of the earliest primitive groupings, perhaps because there are approximately a dozen cycles of the moon or months in a cycle of the sun or year. Twelve is convenient because its multiples and divisors are convenient: 12 = 2 × 2 × 3, 3 × 4 = 2 × 6, 60 = 12 × 5, 360 = 12 × 30. The use of twelve as a base number, known as the duodecimal system (also as dozenal), probably originated in Mesopotamia (see also sexagesimal). This could come from counting on one fingers by touching the digits with one’s thumb. One hand can count to twelve, two hands can count to 144. Twelve dozen (12 = 144, the duodecimal 100) are known as a gross; and twelve gross (12 = 1,728, the duodecimal 1,000) are called a great gross, a term most often used when shipping or buying items in bulk. A great hundred, also known as a small gross, is 120 or ten dozen (a dozen for each finger on both hands). A baker’s dozen, also…

#### Japan hit by massive quake cause Tsunami

A 8.9 magnitude earthquake hit Japan today and cause a 13-foot Tsunami. Tsunami warning have been issued to dozen of…

#### Edgy China blog site shut down amid Internet porn sweep

China expanded an Internet cleanup campaign Friday, shutting down an edgy blog hosting site for apparently carrying “harmful comments” and…