Concept explainers
i.
No. of PINs can you choose to lock cell phone.
i.
Answer to Problem 29PPS
Total number of
Explanation of Solution
Given:
Cell phone has a
Concept Used:
For selecting the personal identification number order is important so arrangement is permuration.
Calculation:
As there are
Since the digits can be repeated, there are
For fourth place, so there are
So
Conclusion:
Therefore, total number of
ii.
Probability to explain how someone is unlikely to guess your PIN.
ii.
Answer to Problem 29PPS
Probability how unlikely can someone guess the Pin is
Explanation of Solution
Given:
Cell phone has a
Concept Used:
For selecting the personal identification number order is important so arrangement is permutation.
Calculation:
Assume, probability how unlikely someone guesses the PIN is
Probability how likely someone guesses the PIN is
After that probability how unlikely someone guesses the PIN is equal to
i.e.
As, there are
That is,
Conclusion:
Therefore, probability how unlikely can someone guess the Pin is
Chapter 13 Solutions
Pre-Algebra, Student Edition
Additional Math Textbook Solutions
College Algebra
Elementary Algebra: Concepts and Applications (10th Edition)
College Algebra with Modeling & Visualization (5th Edition)
College Algebra (6th Edition)
College Algebra in Context with Applications for the Managerial, Life, and Social Sciences (5th Edition)
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education