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- ...he number of ways in which ''n'' labelled objects (for example the numbers from 1 to ''n'') can be arranged in order. These are the [[permutation]]s of th ...inomial coefficient]]s, which count the number of subsets size ''r'' drawn from a set of ''n'' objects, can be expressed as27 KB (3,925 words) - 18:26, 30 July 2019