Reasoning - Logical Problems - Discussion

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Q.

Fact 1:Eyeglass frames cost between $35 and $350.
Fact 2:Some eyeglass frames are made of titanium.
Fact 3:Some eyeglass frames are made of plastic.
If the first three statements are facts, which of the following statements must also be a fact?
I:Titanium eyeglass frames cost more than plastic frames.
II:Expensive eyeglass frames last longer than cheap frames.
III:Only a few eyeglass frames cost less than $35.                         
A. I only B. II only
C. II and III only D. None of the statements is a known fact.

Answer: Option D
Explaination:

 


There is no information in the facts to support statements I or II. Statement III is clearly wrong because, according to Fact 1, no frames cost less than $35.




Discussion

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