Free LSAT  Course > Logical Reasoning > Assumptions > Sufficient Assumptions

On the LSAT, you must be able to identify any assumptions, or gaps, between the evidence and the conclusion. We are going to discuss two types of assumptions: Sufficient Assumptions and Necessary Assumptions.

CHALLENGE: Identify the Sufficient Assumptions

Sufficient Assumption questions are phrased like this:

  • The conclusion follows logically if which one of the following is assumed?
  • The conclusion of the argument can be properly drawn if which one of the following is assumed?

Intro (0:01) | Ex.1 (4:30) | Ex.2 (12:28) | Trap Choices (18:07)

Here are two philosophy videos that go through the distinctions between sufficient and necessary.

Next LSAT: January 16/17

Video Quiz

Sufficient Assumptions

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Next LSAT: January 16/17