There’s no avoiding that you need to learn some Formal Logic before tackling the LSAT. No worries; this will be easy and intuitive. We’ll soon have interactive games to help teach formal logic.

The most basic logic rule is the Conditional (which is just a phrase like A → B).

1. Translate Phrases Into Conditionals

The item on the left in an If… then… statement is called the Sufficient and the one on the right is the Necessary. The LSAT buries these conditionals in convoluted language. It’s rarely stated bluntly as “if… then….“:

We can diagram conditionals by abbreviating them and then using an arrow (→) to join the statements.

[sufficient condition][necessary condition]

“If you can dream it,
you can do it.”
-Walt Disney

“A person is not old until they let regrets
take the place of their dreams.”
John Barrymore

Next LSAT: September 21st

2. Necessary or Sufficient?

Conditional phrases come in two distinct types: necessary or sufficient.

Sufficient

Automatically makes something happens

Necessary

Qualification for something

LSAT FORMAL LOGIC Conditionals

Total questions: 20

Quiz Length: 30 Minutes

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Next LSAT: September 21st