question_answer

Direction: In the question below are three statements followed by two conclusions numbered I and II. You have to take the three statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the three statements disregarding commonly known facts.

Statements:

Some pencils are mobiles.

All mobiles are grass.

All grass is green.

Conclusions:

I. All grass being pencils is a possibility.

II. No green is mobile.

A)  if only conclusion I follows.

B)  if only conclusion II follows.

C)  if either conclusion I or conclusion II follows.

D)  if neither conclusion I nor conclusion II follows.

E)  if both conclusion I and conclusion II follow.

Correct Answer: A

Solution :

(i) All plants are bottles \[\to \] Universal Affirmative (A-type).

(ii) Some shoes are handkerchiefs\[\to \]Particular Affirmative (I-type).

(iii) No calculator is a shoe\[\to \] Universal Negative (E-type).

(iv) Some calculators are not shoes \[\to \]Particular Negative (O-type).

  I + A \[\Rightarrow \] I-type of Conclusion "Some pencils are grass." Its Converse would be: "Some grasses are pencils". If some grasses are pencils, then all grasses being pencils is a possibility. I + A \[\Rightarrow \] I-type of Conclusion "Some pencils are green." A + A \[\Rightarrow \] A-type of Conclusion "All mobiles are green".