Instructions

In each of the question below are given three statements followed by three conclusions numbered I, II 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 three given statements disregarding commonly known facts. Then decide which of the answer 1),2),3),4) and 5) is correct answer and indicate it on the answersheet.

Question 71

Statements:All dogs are cats.
Some cats are rats.
All rats are mats.
Conclusions:I.Some mats are cats
II.Some mats are dogs.
III.Some rats are cats.

Solution

We use elimination to find an exception to the generality of the conclusions. Thus we prove they are not implied. The diagram above satisfies all the statements but contradicts conclusion II. Since we found an exception, the conclusion is not true in "every" case. Thus it is not implied.

We can draw many scenarios that satisfy the statements using Venn diagrams and check for the validity of the conclusions. Conclusions I and III hold in every case. So, they are implied.


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