In this question, three statements are given followed by three conclusions I, II, and III. You have to consider the three statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusion(s) logically follow(s) from the given statements.
Statements:
All photocopiers are computers.
Some computers are laptops.
No laptop is a mobile.
Conclusions:
I. No computer is a mobile.
II. Some computers are photocopiers.
III. All mobiles are photocopiers.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. Only conclusion II follows.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. No computer is a mobile → False (It is possible, but no definite conclusion can be drawn.)
II. Some computers are photocopiers → True (As all photocopiers are computers, so, some computers are photocopiers is also true.)
III. All mobiles are photocopiers → False (It is possible, but no definite conclusion can be drawn.)
Hence, Only conclusion II follows.