a,b,c Please write answer so I can copy paste*** Exercise 1.6.4: Truth values for quantified statements for a given set of predicates. The domain for this problem is a set {a,b,c,d}. The table below shows the value of three predicates for each of the elements in the domain. For example, Q(b) is false because the truth value in row b, column Q is F.   P Q R a T T F b T F F c T F F d T F F Which statements are true? Justify your answer. (a) ∀x P(x) (b) ∃x P(x) (c) ∀x Q(x)

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
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a,b,c

Please write answer so I can copy paste***

Exercise 1.6.4: Truth values for quantified statements for a given set of predicates.

The domain for this problem is a set {a,b,c,d}. The table below shows the value of three predicates for each of the elements in the domain. For example, Q(b) is false because the truth value in row b, column Q is F.

  P Q R
a T T F
b T F F
c T F F
d T F F

Which statements are true? Justify your answer.

(a)

∀x P(x)

(b)

∃x P(x)

(c)

∀x Q(x)

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