Which of the following is contradictory?(-p or -q)→pа.O b. "p or (p and ~p)(p and -q)-(p or q)Oc.O d. (-p or q)→(p and q)(p or p) and -pe.

A proposition is said to be a contradiction if its truth value is F for any assignment of truth…

Answered: Which of the following is…

Which of the following is contradictory? a. (-p or -q)→p O b. "P or (p and -p) O. (p and -q)→(p or q) O d. (-p or q)→(p and q) Oe. (p or p) and -p

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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Question

Which of the following is contradictory?
(-p or -q)→p
а.
O b. "p or (p and ~p)
(p and -q)-(p or q)
Oc.
O d. (-p or q)→(p and q)
(p or p) and -p
e.

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