Permutations with repetition
Let us suppose a finite set A is given. The permutation of the elements of set A is any sequence that can be formed from its elements.
In general, repetitions are taken care of by dividing the permutation by the number of objects that are identical! (factorial).
How many different 5-letter words can be formed from the word DEFINITION?
Enter the number of elements of the set A and the number of different elements and the computer will calculate you how many permutations without repetition of the elements are there?
Number of different elements