1. The radix complement in the pure binary numeration system.

2. The radix point in the decimal numeration system.

3. For large numbers, though hash mark numeration system is too inefficient.

4. Pertaining to a fixed radix numeration system having a radix of two.

5. Pertaining to a fixed radix numeration system , having a radix of twelve.

6. The binary numeration system is usually used to count numbers and to calculate in (computers), while it is not used in other fields of mathematics.

7. For large numbers, though, the " hash mark " numeration system is too inefficient.