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 birds are trees.
(B) Some trees are hens.
Conclusions:
I. Some birds are hens.
II. Some hens are trees.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Only conclusion II follows.
A conclusion follows only if it is true in every diagram that fits the statements.
“All birds are trees”: the circle of birds lies inside the circle of trees
“Some trees are hens”:
The circle of hens overlaps the circle of trees
Nothing is said about birds and hens
Conclusion I (Some birds are hens) does not follow: in this diagram, which fits both statements, no bird is a hen. Conclusion II (Some hens are trees) follows: it is statement (B) read the other way round, because if some trees are hens, those same things are hens that are trees.