c) "Each of the 93 students in this class owns a personal computer. Everyone who owns a personal computer can use a word processing program. Therefore, Zeke, a student in this class, can use a word processing pro- gram." d) "Everyone in New Jersey lives within 50 miles of the ocean. Someone in New Jersey has never seen the ocean. Therefore, someone who lives within 50 miles of the ocean has never seen the ocean."
c) "Each of the 93 students in this class owns a personal computer. Everyone who owns a personal computer can use a word processing program. Therefore, Zeke, a student in this class, can use a word processing pro- gram." d) "Everyone in New Jersey lives within 50 miles of the ocean. Someone in New Jersey has never seen the ocean. Therefore, someone who lives within 50 miles of the ocean has never seen the ocean."
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
Related questions
Question
part C D
Transcribed Image Text:13. For each of these arguments, explain which rules of in-
ference are used for each step.
a) "Doug, a student in this class, knows how to write
programs in JAVA. Everyone who knows how to
write programs in JAVA can get a high-paying job.
Therefore, someone in this class can get a high-paying
job."
b) "Somebody in this class enjoys whale watching. Ev-
ery person who enjoys whale watching cares about
ocean pollution. Therefore, there is a person in this
class who cares about ocean pollution."
c) "Each of the 93 students in this class owns a personal
computer. Everyone who owns a personal computer
can use a word processing program. Therefore, Zeke,
a student in this class, can use a word processing pro-
gram."
d) "Everyone in New Jersey lives within 50 miles of the
ocean. Someone in New Jersey has never seen the
ocean. Therefore, someone who lives within 50 miles
of the ocean has never seen the ocean."
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