EXERCISE 4.1.1: License plate combinations. help_outline In a particular state, the license plates have 7 characters. Each character can be a capital letter or a digit except for 0. (The set of possible digits is {1; 2; 3; 4; 5; 6; 7; 8; 9}.) A person witnesses a crime and remembers some information about the license plate of the getaway car. The authorities would like to figure out how many license plates need to be checked in each case. For each constraint given below, indicate the number of license plates that satisfy that constraint. Note: you do not need to calculate the number. You may keep the multiplications and powers in your answers (a) No constraints (b) The license plate starts with a digit (c) First three are letters (d)First three are letters and last four are numbers
EXERCISE 4.1.1: License plate combinations. help_outline In a particular state, the license plates have 7 characters. Each character can be a capital letter or a digit except for 0. (The set of possible digits is {1; 2; 3; 4; 5; 6; 7; 8; 9}.) A person witnesses a crime and remembers some information about the license plate of the getaway car. The authorities would like to figure out how many license plates need to be checked in each case. For each constraint given below, indicate the number of license plates that satisfy that constraint. Note: you do not need to calculate the number. You may keep the multiplications and powers in your answers (a) No constraints (b) The license plate starts with a digit (c) First three are letters (d)First three are letters and last four are numbers
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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EXERCISE
4.1.1: License plate combinations.
help_outline
In a particular state, the license plates have 7 characters. Each character can be a capital letter or a digit except for 0. (The set of possible digits is {1; 2; 3; 4; 5; 6; 7; 8; 9}.) A person witnesses a crime and remembers some information about the license plate of the getaway car. The authorities would like to figure out how many license plates need to be checked in each case. For each constraint given below, indicate the number of license plates that satisfy that constraint.
Note: you do not need to calculate the number. You may keep the multiplications and powers in your answers
(a) No constraints
(b) The license plate starts with a digit
(c) First three are letters
(d)First three are letters and last four are numbers
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