Wonderlic Personnel Test Syllogisms and Deductive Reasoning 3 — Questions and Answers
Question 1: All roses are flowers. Some flowers fade quickly. Can we conclude all roses fade quickly?
- Yes, all roses fade quickly
- No, that does not follow (Correct answer)
- Only red roses fade
- No roses are flowers
Correct answer: No, that does not follow
'Some flowers' fading does not guarantee that roses are among them.
Question 2: If a worker is late three times, they are warned. Dana was warned. Which is necessarily true?
- Dana was late three times
- Dana may have been warned for another reason (Correct answer)
- Dana was fired
- Dana is never late
Correct answer: Dana may have been warned for another reason
Lateness is one cause of warnings, but the rule doesn't say it's the only cause.
Question 3: All A are B. No B are C. Therefore:
- All A are C
- No A are C (Correct answer)
- Some A are C
- All C are A
Correct answer: No A are C
A falls inside B, and B is entirely separate from C, so no A is C.
Question 4: Some auditors are accountants. All accountants know tax law. Which follows?
- All auditors know tax law
- Some auditors know tax law (Correct answer)
- No auditors know tax law
- Only auditors know tax law
Correct answer: Some auditors know tax law
The auditors who are accountants know tax law, so some auditors do.
Question 5: If the alarm sounds, the doors lock. The doors did not lock. Therefore:
- The alarm sounded
- The alarm did not sound (Correct answer)
- The doors were broken
- Someone unlocked the doors
Correct answer: The alarm did not sound
No locking means, by contrapositive, the alarm did not sound.
Question 6: All whales are mammals. Some mammals live on land. Therefore some whales live on land?
- True
- False — it does not follow (Correct answer)
- Only baby whales
- No mammals live on land
Correct answer: False — it does not follow
Land-dwelling mammals need not include whales, so the conclusion is invalid.
Question 7: No vegetarians eat beef. Sam eats beef. Therefore Sam:
- Is a vegetarian
- Is not a vegetarian (Correct answer)
- Eats only beef
- Is a chef
Correct answer: Is not a vegetarian
Since vegetarians avoid beef and Sam eats it, Sam is not a vegetarian.
Wonderlic Personnel Test Syllogisms and Deductive Reasoning 3
All roses are flowers.
Some flowers fade quickly.
Can we conclude all roses fade quickly?