Question

In each of the following questions below are given four statements followed by four conclusions numbered I, II, III and IV. You have to assume everything in the statements to be true even, if they seem to be at variance with commonly known facts and then decide which of the four given conclusions logically follows from the statements, disregarding commonly known facts and select the appropriate answer.

Statements:-
No group is people.
All people are animals.
All animals are plants.
All plants are roots.

Conclusions:-
I. No group is a plant.
II. All people are plants.
III. At least some group are plants.
IV. All plants are groups.

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

Answer 1

The correct option is A Only II follows

All people are animals (A) + All animals are plants (A) = A + A = A = All people are plants. Hence, conclusion II follows. Now, No group is people (E) + All people are plants (A) = E + A = O = Some plants are not groups. Thus, jconclusion I, III and IV do not follow. However, I and III make a complementary E-I pair. Hence, either I or III follows.

Only, conclusion II follows.