Directions: Three statements are given, followed by three conclusions numbered I, II, and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
All birds are cows.
Some cows are hens.
Some dogs are birds.
Conclusions:
I. Some dogs are hens.
II. No hens are birds.
III. Some cows are dogs.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Only conclusion III follows.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. Some dogs are hens → False (This is possible, but not definite conclusion can be drawn).
II. No hens are birds → False (This is possible, but no definite conclusion can be drawn.)
III. Some cows are dogs → True (As all birds are cows and some dogs are birds, so, some cows are dogs is also true.)