Read the given statements and conclusions carefully.
Assuming that the given information in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follows from the statements.
Statements:
(A) All roads are vehicles.
(B) Some vehicles are trees.
Conclusions:
I. All trees are roads.
II. All vehicles are trees.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Neither conclusion I nor conclusion II follows.
A conclusion follows only if it is true in every diagram that fits the statements. So it is enough to find one diagram that fits both statements and in which a conclusion is false.
“All roads are vehicles”: the circle of roads lies inside the circle of vehicles
“Some vehicles are trees”: the circle of trees overlaps the circle of vehicles; nothing is said about roads and trees
Conclusion I (All trees are roads) does not follow: in this diagram no tree is a road. Conclusion II (All vehicles are trees) does not follow: “some” vehicles are trees, and the roads here are vehicles that are not trees.