Concept explainers
(a)
To find: The probability of guessing the correct pin at random.
(a)
Answer to Problem 48E
The probability of guessing the correct pin of random is
Explanation of Solution
Given:
The pin has four digits.
Calculation:
The ATM pin has four digits and the each of the digit is selected from the digits
Consider the probability of selecting one digit of the ATM pin is,
Then, the probability of the guessing the ATM pin randomly is,
(b)
To find: The probability of guessing the correct after the first two digits are recalled.
(b)
Answer to Problem 48E
The probability of guessing the last two digits of the ATM pin correctly is
Explanation of Solution
Given:
The pin has four digits.
Calculation:
The ATM pin has four digits and the each of the digit is selected from the digits
Consider the probability of selecting one digit of the ATM pin is,
Then, the probability of the guessing the correct last two digits of the ATM pin is,
Chapter 9 Solutions
EBK PRECALCULUS W/LIMITS
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning