We understand permutation an ordered sequence, built by available elements. The number of permutations of n elements It is given by n factorial that is just calculate the factorial of the number of elements

The factorial number is present in most combinations problems, so it is important that we handle this tool in different situations. Therefore, we will study the ways to handle factorial numbers algebraically

Criteria for arrangement or combination of identification The combinations exercises can be solved by arrangement or combination, but to identify which of the two groups exercise is referring? This requires

Simple combination is a type of group where the arrangements are differentiated by the nature of its elements. Simple combination is a type of group in the study of combinatorics. The groups formed with