Instructions

In each question below are given some statements followed by four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.

Question 15

Statements: Some lice are slates
All slates are apples
No apple is car
Conclusions: I. Some cars are slates
II. Some lice are cars
III.Some apples are lice
IV. No car is lice

Solution

Irrespective of the diagram, conclusions II and IV are universally complimentary ie. one of the two has to be true and both can't be true at the same time. Conclusion III is implied from the diagram. We can draw many other diagrams but III always holds. So, the correct answer is (d)