Exam

English and Logical Reasoning Prep Guide

Subject

Logical Reasoning

Chapter

Logical Deduction

English and Logical Reasoning Prep Guide · Logical Reasoning · Logical Deduction

Question : Directions: In each question below there are given some...

Question : Directions: In each question below there are given some statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows/follow from the given statements, disregarding commonly known facts.

Statements:
Some hours are minutes.
All clocks are minutes.
No minute is second.

Conclusions:
I. Some hours are clocks.
II. All seconds being clocks is a possibility.
III. No hour is a clocks.

Step-by-step solution

Analytical Method:

Checking C1 and C3:
‘Some hours are clocks’ and ‘No hour is a clocks.’

In S1 and S2, we can observe that the middle term ‘clocks’ is not distributed even once, a definite conclusion can’t be derived between these two.& And C1 is an I type statement and C2 is an E type statement, they both form a complementary pair (E + I combination).

Therefore, either C1 or C3 follows.

Checking C2:
All seconds being clocks is a possibility.

From S2 and S3,

All clocks are minutes + No minute is second = No clock is a second.

Clearly, there is no possibility that exists between ‘second’ and 'clock’.

C2 hence doesn’t follow.

Evidently, either C1 or C3 follows.

Clearly, option B is the correct answer.