Question : Directions: In the following question, two statements are given followed by two conclusions I and II. You have to consider the two statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements.
Statements:
All parrots are chicks.
All birds are chicks.
Conclusions:
I. Some birds are parrots.
II. All birds are chicks.
Option 1: Both conclusion I and conclusion II follow
Option 2: None of the two conclusions follows
Option 3: Only conclusion I follows
Option 4: Only conclusion II follows
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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:
Some birds are parrots – From the Venn diagram, it is evident that there is no direct relation between birds and parrots. So, no definite relation can be drawn. Thus, this conclusion does not follow.
Conclusion II:
All birds are chicks – From the Venn diagram, it is evident that the circle representing birds completely lies inside the circle representing chicks. So, from this, it can be concluded that all birds are chicks. Thus, this conclusion follows.
Therefore, only conclusion II follows. Hence, the fourth option is correct.
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