Difference Between Necessary & Sufficient Assumption Questions

Both Necessary Assumption and Sufficient Assumption questions contain the word "assumption" within the question stem. However, they ask for very different things.

(Also see Sufficient Assumption Questions and the Negation Test.)

This is why it's misleading (and often confusing) to simply refer to both types under the catch-all category of "Assumption" questions (as Kaplan does, for example).