7! = 7*6*5*4*3*2*1 = 5040
You get a different (smaller) answer if some of the letters are the same.
Suppose you are playing a word game with seven distinct letters. How many seven letter words can there be?
Hint:Think about scrabble.
It is ok it the word is gibberish in this case
3 answers
How did you get that?
The first letter can be 7 choices
the second letter can be 6 choices
the third letter can be 5 choices, and so on.
the second letter can be 6 choices
the third letter can be 5 choices, and so on.
1 answer