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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 variance from commonly known facts. Read the conclusion and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
Statements: Some mountains are rivers.
Some rivers are roads
Some roads are windows
Conclusions:
I. Some windows are mountains
II. Some rivers are mountains
III. Some roads are mountains
IV. Some windows are rivers
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 all the conclusions except II. 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. Conclusion II holds in every case. So, it is implied.
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