Relationships Between NumbersRank of a TermMeasure of position in a set of data. In a sequence of numbers, the rank of a term is the ordinal that characterizes the position of this term. Example Consider this number sequence: 1, 2, 4, 8, 16, 32, 64, ... The number 16 is the 5th term in the sequence, so we say that its rank is 5.