Let F(x,y): "x is friend with y", N(x): "x is funny", W(x): "x is wise", R(x): "x is fair". The domain for x and y is the set of all persons. Select the symbolic (s) of the following sentence: "All persons are friends with some funny and fair persons" 3x ay N(y) A R(y) →F(x,y) None of all proposed answers O vx ay N(y) R(y) A F(x,y) Vx 3y N(x) A R(x) →F(x,y) Vx 3y N(y) A R(y) →F(x,y)

Let F(x,y): "x is friend with y", N(x): "x is funny", W(x): "x is wise", R(x): "x is fair". The domain for x and y is the set of all persons. Select the symbolic (s) of the following sentence: "All persons are friends with some funny and fair persons" 3x ay N(y) A R(y) →F(x,y) None of all proposed answers O vx ay N(y) R(y) A F(x,y) Vx 3y N(x) A R(x) →F(x,y) Vx 3y N(y) A R(y) →F(x,y)

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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