a) Consider the following statements. What rules of inference are used in them? What is the valid conclusion for these statements? If Tina is lucky the she will get a scholarship. Tina is either lucky or smart. Tina is not lucky. Symbols to be used: A: Tina is lucky B: Tina is smart C: Tina get a scholarship (7 marks)

a) Consider the following statements. What rules of inference are used in them? What is the valid conclusion for these statements? If Tina is lucky the she will get a scholarship. Tina is either lucky or smart. Tina is not lucky. Symbols to be used: A: Tina is lucky B: Tina is smart C: Tina get a scholarship (7 marks)

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

See similar textbooks

Similar questions

Translate the following English statements to propositions. 1 It is sunny. 2 I answered the assignment, but I did not submit it. 3 | will remember to send you my address only if you send me an email message. 4 Either I go to school or I go to the mall. 5 I will eat breakfast or I will walk to school, or both.
(a) Write the following statement in the symbolic form. Ensure that you explain the stepstaken.If the boss doesn't like me or thinks I am lazy then she will not give me a raise and I willhave to find another apartment. (b) Determine if the following statements are logically equivalent. Ensure that you explainthe steps taken and the reason for your decision.(i) (¬a → b) ∧ (¬b ∨ (¬a∨ ¬b))(ii) ¬(a ↔ b) c)Determine if the following statement is a tautology. Ensure that you explain the stepstaken and the reason for your decision.(p ⊕ q ⊕ r) ↔ ((p ∨ q ∨ r) ∧ ¬.(p ∧ r) ∨ (q ∧ r) ∨ (p ∧ q)))
QUESTION 18 What is the antecedent in this conditional: "If taxes are raised then the deficit will go down." a. Taxes are raised. b. The deficit will go down. C. Taxes are not raised. d. Raising taxes will reduce the deficit only if spending does not increase. QUESTION 19 Consider the sentence: "Students may go on the field trip only if they have a signed permission slip." What kind of condition is the permission slip? a. both b. neither C. necessary Od. sufficient
Find a proposition with three variables p,q and r that is true when p and q are true, and r is false, and false otherwise. Construct a truth table to verify your answer
the quetion is below, im finding it hard to undertsand the topic
2. Given premises “Every smart phones uses Android or iOS.” “Smartphones that use Androidcan use the Play Store.” “My smartphone cannot use the Play Store.” Prove the conclusion“My smartphone uses iOS.” by rules of inference. You should first represent the premises andthe conclusion using logical expressions.
Question 7 PS:Please choose the right answer only.
Question 2 Consider the correctness statement x == x { x = x + 1; } P where x has type integer. The correctness statement is valid when P is the assertion: Ox>0 Ox 1 Ox< 1 false The correctness statement is invalid in all above cases.
Directions: For each proof, you must include (i.e., write) the premises in that proof. I do not want to see any proofs without premises. YOU CANNOT USE CONDITIONAL PROOF (CP), INDIRECT PROOF (IP), and ASSUMED PREMISES (A). Additionally, use only the 18 rules of inference found in the text and in the notes. You will lose points if you use any of the inference rules Resolution, Contradiction, Transposition, Idempotence and Identity.
Please answer the question in the screenshot.