Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
All phones are laptops.
All pen-drives are phones.
All pen-drives are pens.
Conclusion:
I. All pens are phones.
II. All laptops are pens.
III. All pen-drives are laptops.
1.Only conclusion III follows
2.Only conclusions I and II follow
3.Only conclusions II and III follow
4.Only conclusions I and III follow
Correct Answer : 1
Solution :
Venn diagram:
I. All pens are phones ----- Does not follow
II. All laptops are pens ----- Does not follow
III. All pen-drives are laptops ----- Follows
So, Only conclusion III follows.
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