Question

In each of the questions below are given four statements followed by three conclusions numbered I, II and III, 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:-
I. All rivers are walls.
II. All walls are stones.
III.All stones are clothes.
IV. All clothes trees.

Conclusions:-
I. Some trees are stoners
II. Some clothes are clothes.
III. All walls are clothes.

• A. Only I and II follow
• B. Only I and III follow
• C. Only II and III follow
• D. All I, II and III follow
• E. None of the above

Answer 1

The correct option is D All I, II and III follow

Mediate term of the following statements are
All rivers are walls (A-type)
$\downarrow$
All walls are stones (A-type)
All rivers are stones ...(i)
$A+A\to A-type$
All walls are stones (A-type\)
$\downarrow$
$A+A\to A-type$
All walls are clothes...(ii)
(Conclusion II follows)
All stones are clothes (A-type)
$\downarrow$
All clothes are trees (A-type)
$A+A\to A-type$
All stones are trees...(iii)
Conversion some trees are stones.
(Conclusion I follows)
All rivers are stones
All stones are clothes
Conversion some clothes are rivers
(Conversion II follows)
or

All. I. and III follow