# math

posted by .

If digits cannot be repeated, how many four-digit numbers can be made using the digits 1, 3, 5,7, and 9 ?

• math -

5*4*3*2 = 120

Each time you choose a digit, the number remaining goes down by one.

## Similar Questions

1. ### probability

if digits can't be repeated, how many 4-digit numbers can be arranged using the digits 1, 3, 5, 7, and 9?
2. ### Probability

How many different three-digit numbers can be formed using the digits 1,3,5,7 and 9 if the digits may be repeated?
3. ### math

Elisa need to pick a numerical password that contains 4 digits using the numbers 0-9 If none of the digits can be repeated, how many 4-digit passwords are possible
4. ### math

How many 5-digit even numbers can be made using the digits 2, 4, 6, 7, and 8, if digits cannot be repeated?
5. ### math help

How many 5-digit odd numbers can be made using the digits 3, 5, 6, 7 and 9, if digits cannot be repeated?
6. ### Math

How many 2-digit numbers can be formed using only the digits 2, 3, 5, and 6, if the digits are not be repeated within a number?
7. ### Math help (emergency)

How many 2-digit numbers can be formed using only the digits 2, 3, 5, and 6. if the digits are not repeated within a number?
8. ### math

How many different four digit numbers can be made from the digits 1 through 7 if no digit is repeated
9. ### Pre Calculus 30

1.How many positive three-digit integers can be made from the digits {3,4,5,6,7} if digits may be repeated?
10. ### Pre

How many different license plate number can be made using 2 letters followed by 4 digits selected from the digits 0-9 a) if letters and digits may be repeated?

More Similar Questions