## anonymous one year ago How many different four-digit numbers can be made using the digits 1, 2, 3, 4, 5, 6 if no digit can be used more than once?

1. anonymous

2. OregonDuck

what do you think?

3. anonymous

im not sure!! like idk how to even solve for it. thats what i need help with.

4. OregonDuck

5. OregonDuck

it seems endless though lol :)

6. anonymous

are you serious??!! how do you know this stuff??! lol.

7. OregonDuck

i may be wrong am i @kropot72 ?

8. kropot72

There are 6 choices for the first selection. Having chosen one number there are 5 choices for the second number, 4 choices for the third and 3 choices for the fourth. Therefore the number of four digit numbers is given by: $\large 6\times5\times4\times3=you\ can\ calculate$

9. anonymous

360?! yess thats an option! thankyou!

10. kropot72

You're welcome :)

11. OregonDuck

360 is correct

12. anonymous

shouldn't it be 6*5*4*3*2?

13. OregonDuck

never doubt a champ

14. kropot72

@niels5x9 Why do you think that?

15. anonymous

because first you have six options then you have five options then four then three and finally two right?

16. anonymous

oh oops 4 digit numbers i faileded

17. kropot72

Never mind :)