The Thibetians have adopted the use of the denary and duodenary cycles.
There is no essential difference, however, between this and the denary basis.
The notation is then said to be in the scale of which ten is the base, or in the denary scale.
The words eleven and twelve have been supposed to suggest etymologically a denary basis (see, however, Numeral).
But the system has never spread; and the word “dozen” itself is based on the denary scale.
The numeration was in the denary scale, so that it did not agree absolutely with the notation.
Each one was worth a denary, which was a coin worth about a shilling, or a quarter of a dollar.