There are 195 3-letter permutations.
There are 9 * 8 * 7, or 504, three letter permutations that can be made from the letters in the work CLIPBOARD.
3x2x1=6 permutations.
10! permutations of the word "Arithmetic" may be made.
There are 8P5 = 8*7*6*5*4 = 6720
There are 195 3-letter permutations.
There are 7893600 permutations.
There are 9 * 8 * 7, or 504, three letter permutations that can be made from the letters in the work CLIPBOARD.
There are 5*4*3 = 60 permutations.
5040
3x2x1=6 permutations.
4! 4 * 3 * 2 * 1 = 24
The number of permutations of the letter ABCDEF is 6 factorial, or 720.
There are 8! = 40320 permutations.
The Greek letter pi. pi(abcd) represents permutations of the letters in the set {a,b,c,d}.
There are 6! = 720 permutations.
If you mean permutations of the letters in the word "obfuscation", the answer is 1,814,400.