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. Some letters are glasses.
II. Some glasses are plates.
III. All plates are buses.
IV. All buses are cars.

Conclusions:-
I. Some cars are letters.
II. Some cars are glasses.
III. Some buses are glasses.

• A. Only I and II follow
• B. Only I and III follow
• C. Only II follows
• D. Only III follows
• E. Only II and III follow

Answer 1

The correct option is E

Only II and III follow

Mediate term of the following statements are
some glasses are plates (I-type)
$\downarrow$
All plates are buses (A-type)
$I+A\to I-type$
some glasses are buses.....(i)
Conversion Some buses are glasses
(Conclusion III follows)
All plates are buses (A-type)
$\downarrow$
All buses are cars (A-type)
$A+A\to A-type$
All plates are cars...(ii)
Some glasses are plates. (I -type)
$\downarrow$
All plates are cars (A-type)
$I+A\to I-type$
Some glasses are cars
Conversion some cars are glasses
(Conclusion II follows)

Only II and III follow.