Question

In each of the questions below are given three 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 to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements
Some dogs are rats.
All rates are trees.
Some trees are not dogs.

Conclusions
I. Some trees are dogs.
II. All dogs are trees.
III. All rats are dogs.
IV. No tree is dog.

• A. None follows
• B. Only I follows
• C. Both I and II follow
• D. Both I and II follow
• E. All follow

Answer 1

The correct option is B Only I follows

Mediate term of the following statements is
Some dogs are rats (I-type)
$I+A\to I-type$
Some dogs are trees
Conversion
Some trees are dogs
(Conclusion I follows)
Conclusion I and IV are a complementary pair.

Only conclusion I follows.