OBX Cart Rentals has created a website for customer access. They are trying to determine a reasonably secure number of available passwords. They have decided to allow upper case letters, lower case letters, digits (0 – 9), and the three pecial characters: $, ! ?. Find the number of possible 6 character passwords given each of the conditions (Note: you MUST simplify completely.) The password must begin with a letter (either upper or lower case) repetitions permitted repetitions not permitted The password must begin with a letter and end with a special character ($, !, ?): repetitions permitted repetitions not permitted

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter14: Counting And Probability
Section14.CT: Chapter Test
Problem 3CT: An Internet service provider requires its customer to select a password consisting of four letters...
icon
Related questions
Topic Video
Question

1.

OBX Cart Rentals has created a website for customer access. They are trying to determine a reasonably secure number of available passwords. They have decided to allow upper case letters, lower case letters, digits (0 – 9), and the three pecial characters: $, ! ?. Find the number of possible 6 character passwords given each of the conditions (Note: you MUST simplify completely.)

  1. The password must begin with a letter (either upper or lower case)

    1. repetitions permitted

    2. repetitions not permitted

  2. The password must begin with a letter and end with a special character ($, !, ?):

    1. repetitions permitted

    2. repetitions not permitted

1

IT102 Chapter 6 Homework Fall 2020

  1. 104 people were asked to name the online site they have purchased from this month. 40 answered they shopped at Amazon, 28 at Kohls and 59 at Costco. 12 people shopped at all three sites, 20 at Kohls and Costco and 17 at Amazon and Kohls. 20 shoppers indicated that they did not shop at any of these sites. Note: you will need to determine the number of shoppers that used Costco and Amazon.

    1. Create a Venn Diagram. Note there are 8 disjoint regions. Put the count of the number of shoppers in each region.

    2. How many shoppers shop at either Amazon or Kohls, but not both?

    3. How many shoppers shop at exactly one store?

  2. (For this problem, leave your answers in Combinatorics format – do NOT simplify). Josie

    has 20 college friends that she would like to invite to join her at a concert; however, she only has 8 tickets. Since she will use one of the tickets, she needs to select seven of her friends to join her.

    a. If there are no restrictions
    b. Of her 20 friends, three are triplets. They will either all attend, or none.
    c. Two of the friends are former roommates that no longer get along, they will not

    attend together.
    d. Of her 20 friends, 12 are women and 8 are men. She wants to invite more

    women than men.

  3. (For this problem, leave your answers in Combinatorics format – do NOT simplify). The

    graduation committee has 45 men and 40 women. 3 are selected to sit on the platform with the university president.

    1. How many ways can NO women be selected?

    2. How many ways can at least one man be selected?

    3. How many ways can 2 women and 1 man be selected?

    4. How many ways can the selection be made, given the selectees a designation:

      first chair, second chair and third chair

  4. (For this problem, leave your answers in Combinatorics format – do NOT simplify).

    Curious George is holding a bunch of balloons: 8 blue, 6 red, 5 purple and 4 yellow. He decides to let 4 of them go.

    1. How many ways can he let at least 2 red balloons go?

    2. How many ways can he let at most 1 yellow go?

    3. How many ways can he let the balloons go so that none are yellow?

    4. How many ways can he let the balloons go so that they are all the same color?

    5. How many ways can he let the balloons go so that they are all different colors?

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps

Blurred answer
Knowledge Booster
Permutation and Combination
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Algebra and Trigonometry (MindTap Course List)
Algebra and Trigonometry (MindTap Course List)
Algebra
ISBN:
9781305071742
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781938168383
Author:
Jay Abramson
Publisher:
OpenStax