Question

A computer password must be eight characters long. How many passwords are possible if only the...

  1. A computer password must be eight characters long. How many passwords are possible if only the 26 letters of the alphabet are allowed?
    1. Assuming that repetitions of alphabets is possible to create the password then the number of passwords possible
    2. Assuming that repetitions of alphabets is not possible to create the password then the number of passwords possible
  1. A jar contains 4 red marbles numbered 1 to 4 and 10 blue marbles numbered 1 to 10. A marble is drawn at random from the jar. Find the probability the marble is blue or even- numbered.
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A computer password is required to be 6 characters long. How many passwords are possible if...
A computer password is required to be 6 characters long. How many passwords are possible if the password requires 1 letter(s) followed by 5 digits (numbers 0-9), where no repetition of any letter or digit is allowed? There are possible passwords.
A computer system uses passwords that are exactly eight characters and each character is one of...
A computer system uses passwords that are exactly eight characters and each character is one of the 26 letters (a-z) or integers (0-9). Uppercases are not allowed). How many passwords are possible? If one selected a random password, what is the probability it consists of five letters followed by 3 numbers? What is the probability that a randomly selected password consists exactly of 7 letters and 1 number?
A computer password consists of six characters. 36a. How many different passwords are possible if each...
A computer password consists of six characters. 36a. How many different passwords are possible if each character may be any lowercase letter or digit, and at least one character must be a digit? Please enter your result in scientific notation, making sure the answer in the left box is between 1 and 10. 36b. A computer system requires that passwords contain at least one digit. If six characters are generated at random, and each is equally likely to be any...
a password must be 4 characters long and contain only digits and lowercase english letters. The...
a password must be 4 characters long and contain only digits and lowercase english letters. The english alphabet contains 5 vowels. Assuming that digits and letters can be repeated how many differnt passwords contain exactly one vowel? enter the exact numeric number
Suppose that a certain computer password is allowed to be from 8 to 12 characters long,...
Suppose that a certain computer password is allowed to be from 8 to 12 characters long, and may contain only lowercase letters (a to z), uppercase letters (A to Z), and numbers (0 to 9). 1. How many such passwords are possible? 2. How many such passwords are possible if you cannot repeat characters? 3. How many such passwords are possible if you cannot repeat characters, and you must include at least one number?
A computer system uses passwords that contain exactly 5 characters, and each character is 1 of...
A computer system uses passwords that contain exactly 5 characters, and each character is 1 of the 26 lowercase letters (a–z) or 26 uppercase letters (A–Z) or 10 integers (0–9). Let Ω denote the set of all possible passwords, and let A and B denote the events that consist of passwords with only letters or only integers, respectively. Determine the probability that a password contains at least 1 uppercase letter given that it contains only letters. The answer is not...
A jar contains 10 red marbles numbered 1 to 10 and 4 blue marbles numbered 1...
A jar contains 10 red marbles numbered 1 to 10 and 4 blue marbles numbered 1 to 4. A marble is drawn at random from the jar. Find the probability of the given event. (a) The marble is red Your answer is :      (b) The marble is odd-numbered Your answer is :      (c) The marble is red or odd-numbered Your answer is :      (d) The marble is blue or even-numbered Your answer is :
How many passwords of 5 characters can be made if each password must start with two...
How many passwords of 5 characters can be made if each password must start with two digits and end with three letters. The digits will be with replacement and the letters will be without replacement.
For a certain computer program a password must be exactly 5 characters long. The first character...
For a certain computer program a password must be exactly 5 characters long. The first character can be any lowercase letter, the second must be an uppercase letter, the third character must be a number from 0 – 9, the fourth character can either be a lowercase letter or a number 0 - 9, the fifth character has to be exactly the same as the first character.                                                                                         (6) How many possible passwords are there? What is the...
Motorola has developed an edible password pill. When the pill is ingested, it is activated by...
Motorola has developed an edible password pill. When the pill is ingested, it is activated by the acid in your stomach emitting an 18-bit signal which is strong enough to communicate and unlock all your devices. The edible password pill won’t be available in the near future, but it is already FDA approved. A computer system uses passwords that contain exactly six characters, and each character is one of 26 lower case letters (a, z), 26 upper case letters (A,...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT