How many permutations of the seven letters--A, B, C, D, E, F, and G--are there?

2 ⤊

How many permutations of the seven letters--A, B, C, D, E, F, and G--are there?

2007-04-12 09:59:21 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

1 answers

For the 1st position you have 7 choices.
For the 2nd position you have 6 choices.
For the 3rd position you have 5 choices.
For the 4th position you have 4 choices.
--- see the pattern here? ---

7 x 6 x 5 x 4 x 3 x 2 x 1 is also referred to as "7 factorial" or 7!

7! = 5040

2007-04-12 10:04:11 · answer #1 · answered by Thomas C 6 · 2⤊ 0⤋