Two 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 from the statements.
Statements:
Some phones have keyboards.
All phones are computers.
Conclusions:
I. Some keyboards are computers.
II. Some computers are phones.
III. No keyboard is a computer.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2, i.e., Only Conclusions I and II follow.
Conclusions:
I. Some keyboards are computers → Follows (All phones are computers, and also some phones are keyboards. Some keyboards that are in phones become computers.)
II. Some computers are phones → Follows (I all phones are computers, so definitely some computers are phone.)
III. No keyboard is a computer → Does not follow (According to the statement, some keyboards that are in phones become computers.)