SOLUTION: can someone help please How many 3-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6 if repetition of digits is not allowed? a. 210 b. 5 c. 6 d. 343

Algebra ->  Probability-and-statistics -> SOLUTION: can someone help please How many 3-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6 if repetition of digits is not allowed? a. 210 b. 5 c. 6 d. 343      Log On


   



Question 162582: can someone help please
How many 3-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6 if repetition of digits is not allowed?
a. 210
b. 5
c. 6
d. 343

Answer by SAT Math Tutor(36) About Me  (Show Source):
You can put this solution on YOUR website!
You just need to use the permutations formula. You have a total of 7 digits and you are choosing 3 of these. If you have a TI calculator you can enter 7 nPr 3 or use this formula:
7%21%2F%287-3%29%21+=+210