June 2010 LSAT Section 5 Question 9

Which one of the following statements most accurately characterizes a difference between the two passages?

savannah on September 2, 2019

Valid arguments

Just to ensure that I am clear on the concept of valid arguments, when presented with premise and argument such as anyone named sue is a girl, X is named sue therefore X is a girl, we would approach that as a valid argument on the LSAT?

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Irina on September 28, 2019

@Savannah,

Correct, this would be a valid argument structured as:

If A (Sue) then B (girl)
A (Sue)
Therefore, B (girl)

Let me know if you have any further questions.

Skylar on September 28, 2019

@savnnah Happy to help.

Yes, this is valid logic and would therefore be considered a valid argument on the LSAT. However, this is a relatively simple argument, so it is quite unlikely that you would come across it on an exam. Nevertheless, it is important to understand this logic in order to build a solid foundation for deciphering more complex arguments. Great work!