Hello,

I have a general question about negating statements that is bothering me as I'm working through necessary assumption questions! My question is, do we negate BOTH "not" elements in a statement in order to properly negate it, or just one? For example:

"Lawrence did not get the idea in the passages in questions or did not get their formulations originally from Hartley"

To negate, do we take away both of the "nots" or just one?

Another example:

"Those who do not know a language cannot hear the way speech in that language actually sounds"

To negate, do we say "Those who do know a language cannot hear the way speech in that language actually sounds" or do we say "Those who do know a language can hear the way speech in that language actually sounds"?

Thanks and I hope this makes sense!

Hello 7Sagers!

I'm going through the core curriculum a second time, and I have a question about the negation of and/or statements in conditional relationship! If, for example, we have a statement that reads "If Kay sing, Justin and Tommy sing also" we would diagram this as

K------> J and T (with a split arrow)

My question is, if we are doing a logical reasoning problem, and say an answer choice draws a conclusion that Kay doesn't sing...in order to prove that Kay in fact doesn't sing (i.e. deny the sufficient) we need to also deny the necessary in order for the sufficient to be denied. My question is, if ONE of the conditions in the necessary if failed (Justin not singing for example) is that enough to then contrapose back and say that Kay didn't sing? Or do both conditions (Justin and Tommy not singing) need to be failed?

Similarly, if we have the statement "If Kay sings, Justin or Tommy sing also" and we conclude again that Kay doesn't sing, in order to prove that would be need BOTH Justin and Tommy not to sing, or is it enough for just one of them not to sing, in order to say that Kay didn't?

I hope that makes sense! I believe I know what the answers to these questions are but I just wanted to see if anyone could provide me with an additional explanation !

Hi! Just wondering if I'm missing something. Why are some of the video explanations missing from PT 85?

Hi All!

I’m slightly freaking out...I’ve been relentlessly preparing for the June LSAT and I’ve been so busy working and studying that I missed the deadline to register, and now I don’t know what to do. Is there a wait list I can get on to take it ? Or a late registration fee I can pay? I really didn’t want to go another month to wait and take it in July :(