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 computers are laptops.
All laptops are mobiles.
Some mobiles are tablets.
Conclusions:
I. Some mobiles are computers.
II. All computers are mobiles.
III. Some computers are tablets.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Only conclusions I and II follow.
Conclusion I follows because if all computers are laptops, and all laptops are mobiles, then there must be some overlap between computers and mobiles, hence, some mobiles are computers.
Conclusion II follows because if all computers are laptops, and all laptops are mobiles, then all computers are also mobiles.
Conclusion III does not follow because while it's true that some mobiles are tablets, there's no direct relationship established between computers and tablets in the given statements.