Question 1

Tom is taller than Sam. Sam is taller than Ben. Who is shortest?

Accepted Answer

Ben. Since Tom > Sam > Ben in height, Ben is the shortest.

Question 2

Three boxes are labeled APPLES, ORANGES, MIXED. All labels are wrong. You draw one fruit from MIXED box — it's an apple. What's in the ORANGES box?

Accepted Answer

Mixed (apples and oranges). MIXED box has only apples; APPLES label must be wrong so it has oranges; ORANGES label must then hold the mixed fruit.

Question 3

No artists are accountants. Some doctors are artists. Which MUST follow?

Accepted Answer

Some doctors are not accountants. Those doctors who are artists cannot be accountants (given premise 1), so at least those doctors are not accountants — making A necessarily true.

Question 4

If all Vorks are Blins, some Blins are Zents, and no Zents are Vorks, which MUST be true?

Accepted Answer

No Vorks are Zents. No Zents are Vorks means no Vorks are Zents (symmetric), which is the only conclusion that must hold under all valid interpretations.

Question 5

Which completes the analogy? Lawyer : Bar :: Doctor : ?

Accepted Answer

Medical Register. A lawyer is admitted to the Bar (the professional register); a doctor is admitted to the Medical Register as the equivalent licensing body.

Question 6

Syllogism: No honest politician wins. Sam won the election. What follows with certainty?

Accepted Answer

Sam is not honest. If no honest politician wins and Sam won, Sam cannot be an honest politician — so Sam is not honest (assuming Sam is a politician from context of winning).

Question 7

All glurps are snorbs. Some snorbs are flumps. No flumps are wibbles. Which must be true?

Accepted Answer

No glurps are wibbles. Glurps are snorbs; no flumps are wibbles, but glurps are snorbs not necessarily flumps — yet no flump-wibble overlap means no path from glurp to wibble exists, so no glurps are wibbles.

Question 8

Three boxes contain apples, oranges, or both. All labels are wrong. Box A says 'Apples'. You draw one fruit from Box A — it's an apple. What does Box A contain?

Accepted Answer

Only apples. Since all labels are wrong, Box A can't contain only apples OR only oranges; it must contain both — yet drawing an apple is consistent with 'both'. Wait: if A's label says 'Apples' and is wrong, it holds oranges or both. Drawing an apple eliminates 'only oranges', so Box A holds both fruits.

DeductionTrivia Questions & Answers

Deduction Quiz — 8 Questions

1. Tom is taller than Sam. Sam is taller than Ben. Who is shortest?

2. Three boxes are labeled APPLES, ORANGES, MIXED. All labels are wrong. You draw one fruit from MIXED box — it's an apple. What's in the ORANGES box?

3. No artists are accountants. Some doctors are artists. Which MUST follow?

4. If all Vorks are Blins, some Blins are Zents, and no Zents are Vorks, which MUST be true?

5. Which completes the analogy? Lawyer : Bar :: Doctor : ?

6. Syllogism: No honest politician wins. Sam won the election. What follows with certainty?

7. All glurps are snorbs. Some snorbs are flumps. No flumps are wibbles. Which must be true?

8. Three boxes contain apples, oranges, or both. All labels are wrong. Box A says 'Apples'. You draw one fruit from Box A — it's an apple. What does Box A contain?

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