## Necessary and Sufficient Assumption versus Justify questions

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Josh4737

Posts: 56
Joined: Thu Jan 10, 2013 5:43 pm

### Necessary and Sufficient Assumption versus Justify questions

Hey everyone,
I'm currently reading the Manhattan LR book. Earlier this I read the LR Bible. The concept of necessary and sufficient assumption is a little tricky for me. Are sufficient assumptions and justify questions the same thing? In the Bible they say adaption questions can be negated but I find that sufficient assumptions cannot, just like justify questions. Also, both sufficient and justify can add the answer plus extraneous information yet necessary questions can not.

CardozoLaw09

Posts: 2185
Joined: Sat Aug 28, 2010 1:58 pm

### Re: Necessary and Sufficient Assumption versus Justify questions

Josh4737 wrote: Are sufficient assumptions and justify questions the same thing?

Yes
Josh4737 wrote:In the Bible they say adaption assumption? questions can be negated but I find that sufficient assumptions cannot

This is true, a necessary assumption question can be negated to verify if the answer is correct - if the negated version undermines the conclusion then that A/C is most likely your answer. However this technique does not apply for sufficient assumption questions.

Josh4737

Posts: 56
Joined: Thu Jan 10, 2013 5:43 pm

### Re: Necessary and Sufficient Assumption versus Justify questions

Thank you very much for the clarification!

LSAT Blog

Posts: 1257
Joined: Mon Dec 07, 2009 9:24 pm

### Re: Necessary and Sufficient Assumption versus Justify questions

CardozoLaw09 wrote:
Josh4737 wrote: Are sufficient assumptions and justify questions the same thing?

Yes
Josh4737 wrote:In the Bible they say adaption assumption? questions can be negated but I find that sufficient assumptions cannot

This is true, a necessary assumption question can be negated to verify if the answer is correct - if the negated version undermines the conclusion then that A/C is most likely your answer. However this technique does not apply for sufficient assumption questions.

+1

This is the reason:

viewtopic.php?f=6&t=171115#p4933572