Permutations

Permutations
 

Permutations is a way to change , switch or flip patterns. Like this:

 I will switch the letters as much as I can.

hat
hta
tah
tha
aht
ath

with three 3 letter words there are six Permutations.
The math is like this: 3 x 2 x 1 = 6. That's how many
 words there will be . here is a table :

1 letter words = 1 x 1=1 ( i.e. a ) |  2 letter words = 2 x 1=2 ( i.e. hi,ih )
3 letter words = 3 x 2 x 1 = 6 ( i.e. fun , fnu, nfu ,nuf ,ufn ,unf )
4 letter words = 4 x 3 x 2 x 1 = 24  | ( it explodes here ) 5 letter words = 5 x 4 x 3 x 2 x 1 = 120
6 letter words = 6 x 5 x 4 x 3 x 2 x 1 = 720 |( and here ) 7 LT WD = 7 x 6 x 5 x 4 x 3 x 2 x 1= 5040
8 letter words = 8 x 7 x 4 x 3 x 2 x 1 = 40320 | 9 letter words = 9! ( in math that's how you write Permutations ) 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 362,880  | 10! = 362,8800

Permutations are not only for words you could do it for numbers and icons too.
Like this:

768
786
678
687
876
867

! @ &
! & @
@ ! &
@ & !
& ! @
& @ !


that's it for  Permutations = 479001600 words ( if i wrote down all the Permutations of Permutations it would take me 15 years at the speed of one per second ! )