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:
Some elephants are fishes.
No fish is a tiger.
All deer are tigers.
Conclusions:
I. Some elephants are deer.
II. No elephant is a tiger.
III. No deer is a fish
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Only conclusion III follows.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. Some elephants are deer → False (As some elephants are fishes, and no elephant is a tiger, so, some elephants are deer is not true.)
II. No elephant is a tiger → False (It is possible but no definite conclusion can be drawn.)
III. No deer is a fish → True (As no fish is a tiger and all deer are tigers, so, no deer is a fish is also true.)