Instructions

In each of the questions below are given three statements followed by four conclusions numbered I, II, III and IV. 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.

Question 36

Statements:
Some fruits are flowers. No flower is boat. All boats are rivers.
Conclusions:
I. Some fruits are rivers
II. Some rivers are boats.
III. Some rivers are flowers.
IV. Some flowers are fruits.

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 the conclusions I and III. Since we found an exception, the conclusions are not true in "every" case. Thus they are not implied.

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


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