Three statements are given, followed by four conclusions numbered I, II, III, and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decidee which of the conclusions logically follows from the statements.
Statements:
All cats are birds.
Some tigers are cats.
All bees are tigers.
Conclusions:
I. All bees are birds.
II. Some bees are birds.
III. Some birds are tigers.
IV. All tigers are birds.
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. All bees are birds → False (It is possible but not definite as there is no definite relation between them.)
II. Some bees are birds → False (It is possible but not definite as there is no definite relation between them.)
III. Some birds are tigers→ True (As all cats are birds and some tigers are cats, so, some part of the cat that is a tiger is also a bird.)
IV. All tigers are birds→ False (It is possible but not definite as there is no definite relation between them.)
Hence, Only conclusion III follows.