Discrete

Discrete is the type of variables, which take values from a countable set. As all quantitative types they are available to make comparison of their orders as well as do arithmetic. They are numeric values, but the encoding needn't be in arabic digits.
Sample 1 : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, etc.
Sample 2 : 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, 10, etc.
Sample 3 : 1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 16, 17, 20, etc.
Sample 4 : I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, etc.
Sample 5 : B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, ..., Z, BA, ...