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Which of the following sets is NOT a function? *   a. {(a,a)(b,b)(c,c)}   b. {(a,a)(b,a)(c,a)}   c. {(a,b)(b,c)(c,a)}   d. {(a,a)(a,b)(a,c)}

Which of the following sets is NOT a function? *   a. {(a,a)(b,b)(c,c)}   b. {(a,a)(b,a)(c,a)}   c. {(a,b)(b,c)(c,a)}   d. {(a,a)(a,b)(a,c)}

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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Which of the following sets is NOT a function? *
 
a. {(a,a)(b,b)(c,c)}
 
b. {(a,a)(b,a)(c,a)}
 
c. {(a,b)(b,c)(c,a)}
 
d. {(a,a)(a,b)(a,c)}
 
2.  If a boy saved P25 on the first day, P27 on the second day, P29 the third day, and so on, how many days will it take him to save P880? *
 
a. 20
b. 23
c. 21
d. 22
 
3. Which of the following types of sequence deals with the common ratio? *
a. Arithmetic
 
b. Geometric
 
c. Fibonacci
 
d. Harmonic


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