How many passwords are there of length 6 through 8 consisting of uppercase letters and digits , where there is at least one digit?

The easiest way to count the acceptable passwords is to note that there are 36^6 six-character strings made up of upper-case letters and digits, and 26^6 of them are made up entirely of letters, so there are 36^6−26^6 that include at least one digit

Explanation:

answer; i believe that the correct answer is (department   of highway safety and motor vehicles);

something will pop up that says “know the answer? answer now! ” and you click on it and write your answer. after you are done, submit it.