A popular website requires users to create a password consisting of digits (0-9) or letters (English...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A popular website requires users to create a password consisting of digits (0-9) or letters (English alphabet). The password is non case-sensitive. (a) How many passwords can be formed, if they must be six characters long? (b) How many passwords can be formed, if they must be between six and eight char- acters long? (c) How many eight-character passwords can be formed, if characters cannot repeat? (d) How many eight-character passwords can be formed, if exactly three characters must be letters? (e) How many five-character passwords can be formed, if at least two characters must be letters, and letters cannot repeat? A popular website requires users to create a password consisting of digits (0-9) or letters (English alphabet). The password is non case-sensitive. (a) How many passwords can be formed, if they must be six characters long? (b) How many passwords can be formed, if they must be between six and eight char- acters long? (c) How many eight-character passwords can be formed, if characters cannot repeat? (d) How many eight-character passwords can be formed, if exactly three characters must be letters? (e) How many five-character passwords can be formed, if at least two characters must be letters, and letters cannot repeat?
Expert Answer:
Answer rating: 100% (QA)
Answer a 626 56800235584 b 626 627 628 2176782336896 c 62 61 60 59 58 57 1346262400 d 26 26 26 10 10 10 17576000 e 26 25 10 10 10 65000 Explanation a The number of passwords that can be formed if they ... View the full answer
Related Book For
Posted Date:
Students also viewed these mathematics questions
-
A programmer is instructed to create a password consisting of two different digits. What is the probability that the password is 12?
-
How many different sets of initials can be formed if every person has one surname and (a) Exactly two given names? (b) Either one or two given names? (c) Either one or two or three given names?
-
How many 2n-digit positive integers can be formed if the digits in odd positions (counting the right most digit as position 1) must be odd and the digits in even positions must be even and positive?
-
1. Suppose a company produces a product that sells for $55, has a variable cost per unit of $35, and has fixed costs of $100,000. How many units must the company sell to earn a target profit of...
-
Worst Buy Company has had a lot of complaints from customers of late and its stock price is now only $2 per share. It is going to employ a one-for-five reverse stock split to increase the stock...
-
Oberweis Dairy switched from delivery trucks with regular gasoline engines to ones with diesel engines. The diesel trucks cost $2,000 more than the ordinary gasoline trucks but costs $600 per year...
-
Make decisions in the situations described in the Ethical Behavior Worksheet. You will not have all the background information on each situation; instead, you should make whatever assumptions you...
-
Magic Enterprises borrowed $18,000 from the local bank on July 1, 2010, when the company was started. The note had an 8 percent annual interest rate and a one-year term to maturity. Magic Enterprises...
-
20. a) Choose an algebraic method to solve the following linear system. Explain why you chose this method. 2 3x 2 2y 3 7 3 + 2y = 5 b) Use the method you chose to solve the system. Check your...
-
Warf Computers, Inc., was founded 15 years ago by Nick Warf, a computer programmer. The small initial investment to start the company was made by Nick and his friends. Over the years, this same group...
-
Select an organization that has implemented a lean manufacturing model and find information related to the organizations manufacturing practices. Provide a brief summary about the lean manufacturing...
-
Rite Time Lighting has made the decision to "go public" through an initial public stock offering (IPO). Rite Time Lighting undertook this process to
-
Using Katz and Kahn (1966) typology of downward communication and upward communication how would you describe the state of upward and downward communication within your own organization ?
-
After reviewing at least 5 examples of human rights violations below that interest you, identify the specific human right from the Declaration of Human Rights that you think has been violated in any...
-
Think about three incidents in your personal or business experience, where communication between yourself and other people didn't go well. Reflect upon three different situations, involving upward,...
-
The costs of not adequately funding indigent defense include: Question 1 options: a) Retrials b) Lawsuits c) Lack of public faith in the justice system d) All of the above
-
What is the equation of a circle with its center at the (-4, 1) and a radius of 7.2 inches? ART COSAY C O SE S 2 15. N O O 4137
-
During registration at Tech every quarter, students in the Department of Management must have their courses approved by the departmental advisor. It takes the advisor an average of 4 minutes...
-
The article "Advances in Oxygen Equivalence Equations for Predicting the Properties of Titanium Welds" (D. Harwig, W. Ittiwattana, and H. Castner, The Welding Journal, 2001:126s-136s) reports an...
-
During the spring of 1999, many fuel storage facilities in Serbia were destroyed by bombing. As a result, significant quantities of oil products were spilled and burned, resulting in soil pollution....
-
In a study comparing various methods of gold plating, 7 printed circuit edge connectors were gold-plated with control-immersion tip plating. The average gold thickness was 1.5 m, with a standard...
-
Solve the Gross-Pitaevskii equation and evaluate the mean field energy, see equations (11.2.21) and (11.2.23), for a uniform Bose gas to show that this method yields precisely equation (11.2.6).
-
Solve the Gross-Pitaevskii equation and evaluate the mean field energy, see equations (11.2.21) and (11.2.23), for an isotropic harmonic oscillator trap with frequency \(\omega_{0}\) for the case \(N...
-
Assuming the Dieterici equation of state \[P(v-b)=k T \exp (-a / k T v)\] evaluate the critical constants \(P_{c}, v_{c}\), and \(T_{c}\) of the given system in terms of the parameters \(a\) and...
Study smarter with the SolutionInn App