You need to have a password with 5 letters followed by 3 odd digits between 0 and 9, inclusive. If the characters and digits cannot be used more than once, how many choices do you have for your password
You need to have a password with 5 letters followed by 3 odd digits between 0...
You need to have a password with 4 letters followed by 4 even digits between 0 and 9 , inclusive. If the characters and digits cannot be used more than once, how many choices do you have for your password?
Suppose you have to create a password consisting of seven letters followed by two digits. The letters cannot be repeated but the digits can be repeated. a) How many possible such passwords can you create? b) If you insist on alternating consonants with vowels (do not count “y” as a vowel), starting and ending the string of letters with consonants, and making the two digits at the end a prime number greater than 23, then how many passwords can you...
A 5-character password must start with a letter followed by 4 digits. How many passwords are possible? (Digits and letters may be repeated).
discrete math. pls provide a clear
explanation. thanks
A password is required to be 12 to 16 characters in length. Characters can be digits (0-9), upper or lower-case letters (A-Z, a-z) or special characters. There are 10 permitted special characters. There is an additional rule that not all characters can be letters (i.e. there has to be at least one digit or one special character) ow many permitted passwords are there? Give your answer in un evaluated/un·simplified form and explain...
2) A passcode consists of three letters (A-Z, a total of 26) followed the three digits (0-9). Repetitions are allowed. How many such passcodes are possible? (You don't need to simplify your answer)
Serial numbers for a product are to be made using 4 letters followed by 2 digits. The letters are to be taken from the first 5 letters of the alphabet, with no repeats. The digits are taken from the 10 digits (0, 1, 2, 9), with no repeats. How many serial numbers can be generated?
4: A certain computer program is accessed by entering a user-defined password. If the password a. can contain any lowercase letter, uppercase letter, or digit from 0-9, and must contain 10 characters, how many possible passwords are there if no character can be used more than once? Express your answer as a factorial statement. Is 8 an example of permutations or combinations? b.
4: A certain computer program is accessed by entering a user-defined password. If the password a. can...
Write a program that asks the user to enter a password, and then checks it for a few different requirements before approving it as secure and repeating the final password to the user. The program must re-prompt the user until they provide a password that satisfies all of the conditions. It must also tell the user each of the conditions they failed, and how to fix it. If there is more than one thing wrong (e.g., no lowercase, and longer...
License plates: In a certain state, license plates consist of three digits from 0 to 9 followed by three letters. Assume the numbers and letters are chosen at random. Replicates are allowed. Part: 0/3 a. How many different license plates can be made? b. How many different license plates can be made in which no letter or number appears more than once? c. A license plate is chosen at ranpom. What is the probability that no letter or number appears...
1. (a) (i) How many different six-digit natural numbers may be formed from the digits 2, 3, 4, 5, 7 and 9 if digits may not be repeated? (ii) How many of the numbers so formed are even? (iii) How many of the numbers formed are divisible by 3? (iv) How many of the numbers formed are less than 700,000? (b) JACK MURPHY’s seven character password consists of four let- ters chosen from the ten letters in his name (all...