Arrangement numbers, more commonly called permutation numbers, or simply permutations, are the number of ways that a number of things can be ordered or arranged.

Example

“ARRANGEMENT” is an eleven letter word.

If there were no repeating letters, the answer would simply be 11! = 39916800

However, since there are repeating letters, we have to divide to remove the duplicates accordingly. There are 2 As, 2 Rs, 2 Ns, 2 Es

Therefore, there are 8! ( 2! • 2! • 2! • 2! )
= 11! / 8 ! = 2494800
= 2494800 ways of arranging it.
Use below calculators to calculate the number of combinations can we make from your input numbers or letters .