To tie it back to subsets/supersets: an argument is valid if the set of all universes where its premises are true is a subset of the set of all universes where its conclusion is true. So the premises' truth is sufficient for the conclusion's truth, and the conclusion's truth is necessary for the premises' truth.
2
Topics
PT Questions
Select Preptest
You've discovered a premium feature!
Subscribe to unlock everything that 7Sage has to offer.
Hold on there, stranger! You need a free account for that.
We love that you want to get going. Just create a free account below—it only takes a minute—and then you can continue!
Hold on there, stranger! You need a free account for that.
We love that you came here to read all the amazing posts from our 300,000+ members. They all have accounts too! Just create a free account below—it only takes a minute—and then you’re free to discuss anything!
Hold on there, stranger! You need a free account for that.
We love that you want to give us feedback! Just create a free account below—it only takes a minute—and then you’re free to vote on this!
Subscribers can learn all the LSAT secrets.
Happens all the time: now that you've had a taste of the lessons, you just can't stop -- and you don't have to! Click the button.
To tie it back to subsets/supersets: an argument is valid if the set of all universes where its premises are true is a subset of the set of all universes where its conclusion is true. So the premises' truth is sufficient for the conclusion's truth, and the conclusion's truth is necessary for the premises' truth.