For All You Math Experts?

3 ⤊

For All You Math Experts?

How many combinations of 4 can you make, using the numbers 0-9? Please list them

2007-07-02 17:29:07 · 3 answers · asked by Yo 2 in Science & Mathematics ➔ Mathematics

3 answers

10,000, which explains why I am not going to list them. Note that you have not excluded repeats.

2007-07-02 17:32:53 · answer #1 · answered by Anonymous · 1⤊ 0⤋

If digits can be repeated you have 10^4 = 10,000 combinations. Count from 0 to 9999 using leading 0's.

If digits cannot be repeated you have 10!/6! = 5,040 combinations (10*9*8*7). Again, too many to list here.

2007-07-02 17:48:33 · answer #2 · answered by Helmut 7 · 1⤊ 0⤋

actually its 9999 if you can use the same number twice.

otherwise it is 9*8*7*6 = 3024 combinations.

2007-07-02 17:38:08 · answer #3 · answered by TadaceAce 3 · 1⤊ 0⤋