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Given: (1) f: Z -> Z, where f(x) = x mod 10, has an inverse. (2) Let S be the set of all people in the world. Let R be the relation "a is taller than b", where a and b are people. Then, (S, R) is a partially ordered set. Select one of the following choices: O a. (1) and (2) are True O b. (1) and (2) are False ○ c. (1) is True and (2) is False ○ d. (1) is False and (2) is True

Given: (1) f: Z -> Z, where f(x) = x mod 10, has an inverse. (2) Let S be the set of all people in the world. Let R be the relation "a is taller than b", where a and b are people. Then, (S, R) is a partially ordered set. Select one of the following choices: O a. (1) and (2) are True O b. (1) and (2) are False ○ c. (1) is True and (2) is False ○ d. (1) is False and (2) is True

Database System Concepts
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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Given: (1) f: Z -> Z, where f(x) = x mod 10, has an inverse. (2) Let S be the set of all people in the world. Let R be the relation "a is taller than b", where a and b are people. Then, (S, R) is a partially ordered set. Select one of the following choices: O a. (1) and (2) are True O b. (1) and (2) are False ○ c. (1) is True and (2) is False ○ d. (1) is False and (2) is True
Transcribed Image Text:Given: (1) f: Z -> Z, where f(x) = x mod 10, has an inverse. (2) Let S be the set of all people in the world. Let R be the relation "a is taller than b", where a and b are people. Then, (S, R) is a partially ordered set. Select one of the following choices: O a. (1) and (2) are True O b. (1) and (2) are False ○ c. (1) is True and (2) is False ○ d. (1) is False and (2) is True
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