at a certain company, password must be formed 3-5 characters long and composed of the 26...

at a certain company, password must be formed 3-5 characters long and composed of the 26 letters of the alphabet, 10 digits 0-9, and 14 symbols.

A. how many passwords are possible if repetition is allowed?

B. what is the probability that a password chosen has at least 1 repeated character.

Expert Solution

Colby Messinger answered 2 years ago

At a certain company, passwords must be from 3–5 symbols long and composed from the 26...

At a certain company, passwords must be from 3–5 symbols long and composed from the 26 uppercase letters of the Roman alphabet, the ten digits 0–9, and the 14 symbols !, @, #, $, %, ^, &, *, (, ), 2, 1, {, and }. c. How many passwords have at least one repeated symbol? d. What is the probability that a password chosen at random has at least one repeated symbol?

An organization has the following password policies: - password must be at least 16 characters long...

An organization has the following password policies: - password must be at least 16 characters long - three failed login attempts will lock the account for 5 minutes - password must have one uppercase letter, one lowercase letter, and one non alphanumeric symbol a database server was recently breached, and the incident Response Team suspect the passwords were compromised. Users with permission on the database server were forced to change their passwords for that server. Unauthorised and suspicious logins are...

An online account password for a certain website consists of eight characters, where at least one...

An online account password for a certain website consists of eight characters, where at least one must be a digit (i.e. a number from 0-9). a. How many different passwords are possible if only lowercase letters and digits can be used? b. How many different passwords are possible if a user wants to include single capital letter somewhere in their password? c. If a computer program randomly generates eight characters (such that each could be either a digit or any...

Passwords on an ancient computer are required to be 4-5 characters long and made up of...

Passwords on an ancient computer are required to be 4-5 characters long and made up of lower case letters only (a..z : there are 26 possibilities). Please answer each of these questions below, giving numerical answers. You should also explain how you got each answer, for full or partial credit. a) Assume that letters may NOT be repeated, and passwords are 4-5 letters long. How many passwords are possible? b) Assume that letters MAY be repeated, and passwords are 4-5...

How many passwords are possible? Passwords must: be more than 8 characters long but no more...

How many passwords are possible? Passwords must: be more than 8 characters long but no more than 30 Use lower case, upper case, a number, and a special character [like ~ ! @ # $ % ^ & * ( ) _ + = ? > < . , / ] A mathematical expression is fine. What kind of PMF will be used?

At a certain company, any valid password consists of four digits followed by two lower case...

At a certain company, any valid password consists of four digits followed by two lower case letters. Determine how many passwords are possible if the first digit cannot be a 0, the last letter must be a vowel (a, e, i, o, u) and repetition of any letter or any digit is not permitted?

3-26 (Objectives 3-4, 3-5, 3-6, 3-7, 3-8) For the following independent situations, assume that you are...

3-26 (Objectives 3-4, 3-5, 3-6, 3-7, 3-8) For the following independent situations, assume that you are the audit partner on the engagement: 1. A number of frozen yogurt stores have opened in the last few years and your client, YogurtLand, has experienced a noticeable decline in customer traffic over the past several months that has caused you to have substantial doubt about YogurtLand’s ability to continue as a going concern. 2. Intelligis Electronics is a manufacturer of advanced electrical components....

5. In a certain market in the long-run, suppose the total cost function for each firm...

5. In a certain market in the long-run, suppose the total cost function for each firm and potential entrant is given by TC = 5Q3 -10Q2.+20Q. Market demand is given by D(P)= 2000 - 100P . 1) In equilibrium, how many units will each firm produce? 2) What is the market equilibrium price? 3) What is total market demand? 4) What is the equilibrium number of firms in the long-run?

What decisions must a company make for certain products to be outsourced and others to be...

What decisions must a company make for certain products to be outsourced and others to be made domestically and why?

As a result of certain debt obligation a company must pay $15000 a year for the...

As a result of certain debt obligation a company must pay $15000 a year for the next 10 years. The next payment is due one year from now. The company wants to cancel this debt over the next 4 years. If the interest rate is 9% compounded annually, what is the payment for the next 4 years?

Question