SOLUTION: how many combinations are there in a four digit code from 1-9 and you can't use the same number twice

SOLUTION: how many combinations are there in a four digit code from 1-9 and you can't use the same number twice

Algebra.Com

Question 859091: how many combinations are there in a four digit code from 1-9 and you can't use the same number twice
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
9*8*7*6=3024
RELATED QUESTIONS
Anna forgot the code of a 3-digit lock on her case (all digits ranging from 0 to 9).... (answered by anand429)

How many diffrent passcodes afe there in a four digit code with number 0 to... (answered by fcabanski)

A pin code is a sequence of four numbers, each digit can repeat itself. how many... (answered by rfer)

If you are allowed to use numbers 1 - 9 and need to choose the passcode of an exact 4... (answered by greenestamps)

to gain access to his account, a customer using an ATM must enter a four-digit code. if... (answered by scott8148)

For a five-digit zip code, the first four digits can be any of the digits 0-9 and the... (answered by ewatrrr)

you create a four digit code for your ATM card using the digits 0 to 9. how many... (answered by stanbon)

Let the world telecommunication body decides to follow the norm to assign a number. The... (answered by edjones)

Hi, Please can you tell me how many different combinations there are to the... (answered by AnlytcPhil,josmiceli)