Permutation, Combination, and Binomial TheoremPermutation Number of possible ways to select out of different elements and arrange them in a row: Combination Number of possible ways to select out of different elements, ignoring the order and grouping together cases that differ only by the order: Repeated permutation Permutation where out of different elements are selected and repetition is allowed: ( in some cases) Repeated combination Combination where out of different elements are selected and repetition is allowed: ( in some cases) Circular permutation Permutation where different elements are arranged in a circle: If reversal is allowed: General circular permutation Permutation where out of different elements are selected and arranged as a circle: Binomial theorem Polynomial theorem A general term of the expansion of [0]Top |