1.1 Even
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School
University of North Carolina, Pembroke *
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Course
1010
Subject
Philosophy
Date
Apr 3, 2024
Type
docx
Pages
9
Uploaded by MagistrateValorMantis7
Joshua Brady
Logic
1.1a
1. The sky is blue.
Your answer of “Statement”
is correct!
2. Let's paint the table red.
Your answer of “Sentence only”
is correct!
3. Please close the window!
Your answer of “Sentence only”
is correct!
4. Murder is illegal.
Your answer of “Statement”
is correct!
5. Abraham Lincoln was born in 1983.
Your answer of “Statement”
is correct!
6. If San Francisco is in California, then San Francisco is in the U.S.A.
Your answer of “Statement”
is correct!
7. It is not the case that Ben Franklin.
Your answer of “Neither”
is correct!
8. "Why?" asked Socrates.
Your answer of “Statement”
is correct!
9. Table not yes if.
Your answer of “Neither”
is correct!
10. Either humans evolved from apes, or apes evolved from humans.
Your answer of “Statement”
is correct!
11. Davy Crockett died at the Alamo.
Your answer of “Statement”
is correct!
12. How are you?
Your answer of “Sentence only”
is correct!
13. If seven is greater than six, then six is greater than seven.
Your answer of “Statement”
is correct!
14. Let's have lunch.
Your answer of “Sentence only”
is correct!
15. Go!
Your answer of “Sentence only”
is correct!
16. Shall we dance?
Your answer of “Sentence only”
is correct!
17. Patrick Henry said, "Give me liberty or give me death."
Your answer of “Statement”
is correct!
18. If punishment deters crime.
Your answer of “Neither”
is correct!
19. "Stand at attention!" ordered General Bradley.
Your answer of “Statement”
is correct!
20. Despite the weather.
Your answer of “Neither”
is correct!
21. The longest shark in the Pacific Ocean.
Your answer of “Neither”
is correct!
22. Either Heather or Cheri.
Your answer of “Neither”
is correct!
23. If there is only one human.
Your answer of “Neither”
is correct!
24. Either shut the door or turn off the radio.
Your answer of “Sentence only”
is correct!
25. Do you swear to tell the truth?
Your answer of “Sentence only”
is correct!
26. Having seen all the suffering.
Your answer of “Neither”
is correct!
27. Let's stop griping and get to work.
Your answer of “Sentence only”
is correct!
28. Fame is a drug.
Your answer of “Statement”
is correct!
29. By faith and love.
Your answer of “Neither”
is correct!
30. Either Laura is angry or Frances is depressed.
Your answer of “Statement”
is correct!
1.1b
1. An argument is a set of statements where some of the statements, called the premises, are intended to support another, called the conclusion.
Your answer of “True”
is correct!
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2. Logic is the study of methods for evaluating whether the premises of an argument adequately support its conclusion.
Your answer of “True”
is correct!
3. Every valid argument has true premises and a true conclusion.
Your answer of “False”
is correct!
4. Deductive logic is the part of logic that is concerned with tests for validity and invalidity.
Your answer of “True”
is correct!
5. Some arguments are true.
Your answer of “False”
is correct!
6. Some invalid arguments have false conclusions but (all) true premises.
Your answer of “True”
is correct!
7. Every valid argument with a true conclusion is sound.
Your answer of “False”
is correct!
8. Every unsound argument is invalid.
Your answer of “False”
is correct!
9. If all the premises of an argument are true, then it is sound.
Your answer of “False”
is correct!
10. If an argument has one false premise, then it is unsound.
Your answer of “True”
is correct!
11. Some statements are sound.
Your answer of “False”
is correct!
12. Every invalid argument is unsound.
Your answer of “True”
is correct!
13. If an argument is invalid, then it must have true premises and a false conclusion.
Your answer of “False”
is correct!
14. Every invalid argument has this feature: It is possibly false that if its premises are true, then its conclusion is true.
Your answer of “True”
is correct!
15. Every valid argument has this feature: Necessarily, if its premises are false,then its conclusion is false.
Your answer of “False”
is correct!
16. An inductive argument is one in which the premises are intended to guarantee the conclusion.
Your answer of “False”
is correct!
17. "It's raining outside, so the ground is wet," is best regarded as a deductive argument.
Your answer of “False”
is correct!
1.1C
Evaluation of your answers from Section 1.1C
The Logic Tutor responds...
1. If Lincoln was killed in an automobile accident, then Lincoln is dead. Lincoln was not killed in an automobile accident. Therefore, Lincoln is not dead.
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Your answer of “Invalid”
is correct!
2. If Lincoln was killed in an automobile accident, then Lincoln is dead. Lincoln is not dead. Hence, Lincoln was not killed in an automobile accident.
Your answer of “Valid”
is correct!
3. Either we use nuclear power or we reduce our consumption of energy. If we use nuclear power, then we place our lives at great risk. If we reduce our consumption of energy, then we place ourselves under extensive governmental control. So, either we place our lives at great risk or we place ourselves under extensive governmental control.
Your answer of “Valid”
is correct!
4. Some humans are comatose. But no comatose being is rational. So, not every human is rational.
Your answer of “Valid”
is correct!
5. Alvin likes Jane. Jane likes Chris. So, Alvin likes Chris.
Your answer of “Invalid”
is correct!
6. David is shorter than Saul. Saul is shorter than Goliath. It follows that David is shorter than Goliath.
Your answer of “Valid”
is correct!
7. All physicians are singers. Lady Gaga is a physician. Therefore, Lady Gaga is a singer.
Your answer of “Valid”
is correct!
1.1D
1. All collies are dogs. Some animals are not dogs. So, some animals are not collies.
Your answer of “Sound”
is correct!
2. "Let's party!" is either a sentence or a statement (or both). "Let's party!" is a sentence. So, "Let's party!" is not a statement.
Your answer of “Unsound”
is correct!
3. All the planets are round. The earth is round. So, the earth is a planet.
Your answer of “Unsound”
is correct!
4. All women are married. Some executives are not married. So some executives are not women.
Your answer of “Unsound”
is correct!
5. All mammals are cats. All cats are animals. So, all mammals are animals.
Your answer of “Unsound”
is correct!
6. All collies are dogs. Hence, all dogs are collies.
Your answer of “Unsound”
is correct!
7. If San Francisco is in Saskatchewan, then San Francisco is in Canada. But it is not true that San Francisco is in Saskatchewan. Hence, it is not true that San Francisco is in Canada.
Your answer of “Unsound”
is correct!
Your preview ends here
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