Question
Read the given statements and conclusions carefully.
Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: Some Flight are Train. No Train is a Ticket. All Ticket are Petrol. Conclusions: I. Some Petrol are not Train. II. Some Flight are not Petrol. III. Some Flight are not Ticket.Solution
No Train is a Ticket (E) + All Ticket are Petrol (A) → Some Petrol are Trains (O*). Hence conclusion I follows. Some Flight are Train (I) + No Train is a Ticket (E) → Some Flight are not Ticket (O) + All Ticket are Petrol (A) → No conclusion. Hence conclusion II does not follows but conclusion III follows.
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