Did you ever learn something in school that you just can't seem to ever forget? I remember being in high school and having to write a computer program that would calculate the factorial of a number. If you've never heard of it, this is how it works:
If you have three items, you can arrange them six ways without ever duplicating a sequence.
1 x
2 = 2 x
3 = 6. The factorial of 4 would be 24.
The factorial for just the 26 letters of the alphabet is 403,291,461,126,606,000,000,000,000

.
I know that the responses to the five letters would be truly unlimited but I'm just wondering if anybody knows how ( or if it's possible) to figure out how many combinations of five you could have for the 26 letters of the alphabet. Does that make sense

?