Question 35
MediumOriginal questionAssume the statements are true.
Statements: All buses are vans. Some vans are trucks. No truck is a car.
Conclusions:
I. No bus is a car.
II. Some vans are not cars.
Show the answer and explanation
CorrectNot quiteAnswer B
Correct answer: B
Explanation
The vans that are trucks cannot be cars, since no truck is a car. So some vans are not cars: II follows.
Buses are vans, but nothing ties buses to the trucks. A bus that is not a truck may be a car, so I is not definite.
Only II follows.
Worth noting
The 'No' statement only protects trucks. Buses are linked to vans by All, and vans to trucks only by Some, so the chain breaks at buses.
- Concept
- Some + No inside a longer chain
- Typical timeTypical
- 70 s
- Your timeYours
- —
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