Worlds of David Darling
Encyclopedia of Science
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The smallest perfect number, the number of faces of a cube, and the number of sides of a hexagon. There are six players on a volleyball team, six kinds of chessmen, and six types of quark (not including antiquarks). A touchdown in American football earns six points and a hit across the boundary rope of a cricket field without bouncing scores six runs. Long ago people indicated a number by pointing to a part of their body; this is echoed in the New Guinea word for six, which is the same as that for "wrist."

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