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Learn the difference between combinations and permutations, and how to calculate them with or without repetition. See examples, formulas, notation and applications of combinatorics.
Calculate the number of permutations of n objects taken r at a time, with or without replacement. See examples of permutation problems and solutions, and learn the formula for nPr.
Learn what is permutation, how to calculate it using different formulas, and the types of permutation with examples. Find out the difference between permutation and combination, and the counting principle of permutation.
Learn how to calculate the number of permutations of n elements taken r at a time using the formula nPr = n! / (n - r)!. See examples, explanations, and practice problems on permutation formula.
Learn how to use the permutation formula (nPr) to find the number of arrangements of r things from n things with or without repetition. See the derivation, different types and examples of permutations.
A permutation is an arrangement of objects in which the order is important (unlike combinations, which are groups of items where order doesn't matter). You can use a simple mathematical formula to find the number of different possible ways to order the items.
Learn the difference between permutations and combinations, and how to calculate them using formulas and examples. A permutation is an arrangement of a set of items with order mattering, while a combination is a selection of a set of items with order not mattering.
Learn about permutations, the orderings of a list of objects, and how to count them. Find examples, formulas, algorithms, and problems involving permutations of distinct, repeated, or restricted objects.
A permutation is a selection of objects from a set where order matters. Learn how to calculate permutations with or without repetition, and how to use them in probability problems.
Learn the permutation formula for the number of permutations of n things taken r at a time. See examples, solutions, videos and word problems with repeated symbols, restrictions and special conditions.