👉 In mathematics, "nollepros" is a term used to describe a set of numbers that are not in arithmetic progression. It's similar to an arithmetic progression but with one element missing from the sequence. For example: 1) The set {1, 2, 3, 4} is part of an arithmetic progression (AP), as it has three elements and can be represented by the formula a + (n-1)d where a = first term, d = common difference
