Ask Question
30 January, 02:02

A word processing program requires a user to enter a 7-digit registration code made up of the digits 1,2,4,5,6,7 and 9. Each number has to be used, and no number can be used more than once. How many codes are possible?

+4
Answers (1)
  1. 30 January, 02:33
    0
    For the first digit there are 7 choices. For the second digit there are 6 choices (because we can't use the same one again). And so on, until there is only one choice for the last digit.

    The number of possible codes is this:

    7*6*5*4*3*2*1 = 7! = 5040
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A word processing program requires a user to enter a 7-digit registration code made up of the digits 1,2,4,5,6,7 and 9. Each number has to ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers