Question : Directions: Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. You have to decide which conclusions logically follow/s from the given statements.
Statements:
I. All rubbers are folders.
II. Some folders are computers.
III. All computers are envelopes.
Conclusions:
I. All folders are rubbers.
II. Some computers are folders.
Option 1: Neither conclusion (I) nor (II) follows
Option 2: Only conclusion (II) follows
Option 3: Only conclusion (I) follows
Option 4: Both conclusions (I) and (II) follow
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Correct Answer: Only conclusion (II) follows
Solution : The possible Venn diagram, according to the given statements is as follows –
Let's analyse the conclusions –
Conclusion (I):
All folders are rubbers – From the Venn diagram, it is evident that some parts of the circle representing folders lie outside the circle representing rubbers while some lie inside. Therefore, some folders are rubbers is true, but all folders are rubbers is a false conclusion.
Conclusion (II):
Some computers are folders – From the Venn diagram, we can see that the two circles representing folders and computers intersect and have some common area between them. So, this conclusion follows.
So, the only conclusion II follows. Hence, the second option is correct.
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