|No||A statement of Type||When reversed gives a conclusion of type|
|1.||E||No car is desk||E
|No desk is car
Some desks are not cars.
∵ O is a part of E
|2.||I||Some sofas are hills||I||Some hills are sofas
Here, the conclusion ‘some hills are not sofas’ is seemingly right, but simply remember the universal principle no. 2. So this cannot be true.
|3.||A||All men are rolls.||I||Some rolls are men.
In this case, if you are also taking the conclusion ‘some rolls are not men’ to be true, remember the second universal principle: no negative with positive is possible.
|4.||O||Some tins are not cats||No conclusion is possible||With O type of statement, you cannot get any conclusion. Even you cannot make the conclusion as ‘some cats are not tins’. The representation of the main statement could be given in the following way.
Because the statement only signifies that some part of tins must be outside the circle of cats, and all the diagrams, which are representing that, are valid diagrams.