SOLUTION: How many diffrent passcodes afe there in a four digit code with number 0 to 9

Algebra ->  Permutations -> SOLUTION: How many diffrent passcodes afe there in a four digit code with number 0 to 9      Log On


   

Question 563857: How many diffrent passcodes afe there in a four digit code with number 0 to 9
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
This cannot be answered without additional information.


If repeats are allowed, then it is 10^4 = 10,000.


If repeats aren't allowed then it is 10C4 = 210.

If you need help understanding math so you can solve these problems yourself, then one on one online tutoring is the answer ($30/hr). If you need faster solutions with guaranteed detailed answers, then go with personal problem solving ($3.50-$5.50 per problem). Contact me at fcabanski@hotmail.com