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:
No photographer is an architect.
All engineers are photographers.
All postmen are architects.
Conclusions:
I. No engineer is an architect.
II. No engineer is a postman.
III. No photographer is a postman.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. All conclusions follow.
Conclusions:
I. No engineer is an architect. - Follows (because All engineers are photographers and No photographer is an architect. So, No engineer is an architect too)
II. No engineer is a postman. - Follows (because All engineers are photographers, No photographer is an architect and All postmen are architects. So, No engineer is a postman too)
III. No photographer is a postman. - Follows (because No photographer is an architect and All postmen are architects. So, No photographer is a postman too)