Question : Directions: In the question two statements are given, followed by two conclusions, I and II. You have to consider the 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, follows from the given statements.
Statements:
l. No mobile is an electronic item.
ll. All electronic items are costly.
Conclusions:
I. No costly is a mobile.
II. Some costly are mobile.
Option 1: Only conclusion II follows
Option 2: Both conclusions I and II follow
Option 3: Either conclusion I or II follow
Option 4: Only conclusion I follow
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Correct Answer: Either conclusion I or II follow
Solution :
The possible Venn diagram according to the given statements is as follows –
Let's analyse the conclusions –
Conclusion (I):
No costly is a mobile – According to the Venn diagram, there is no definite relation between costly and mobile. So, this conclusion does not follow.
Conclusion (II):
Some costly are mobile – According to the Venn diagram, there is no definite relation between costly and mobile. So, this conclusion does not follow.
But, Some + No is a complimentary pair, it can be concluded that either conclusion I or conclusion II follows. Hence, the third option is correct.
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