The author uses the word "immediacy" (line 39) most likely in order to express

Bomi on January 2 at 05:08AM

How to know when to use sufficient and necessary

What question types do we use sufficient and necessary on

5 Replies

Ravi on January 2 at 06:14AM

@oeboda,

Great question. Sufficient and necessary conditions appear on all
sorts of types of questions, so there is no one particular one to look
out for.

Because they appear so much on the LSAT in so many different question
types, the best thing you can do to prepare is to practice diagramming
statements that contain conditional logic using sufficient and
necessary statements, That way, once you're answering questions, you
will automatically know when you need to diagram and when you don't
have to.

If you haven't already done so, I highly recommend watching Mehran's
video on sufficient and necessary conditions. It's also important to
have a strong understanding of these concepts because one common
answer choice is "confuses the sufficient condition for the necessary
one" or some paraphrasing of that. This answer choice can sound good,
but it's often a trap answer, and having a good understanding of
sufficient and necessary conditions will help you to parse out when
it's a good answer choice and when it's a bad one.

Does this make sense? Let us know if you have any more questions!

Bomi on January 2 at 07:10PM

Im just struggling to know when I need to implement these techniques because I know how to do it,

Ravi on January 3 at 05:48PM

@oeboda,

That's great that you're comfortable in diagramming S + N. The thing
is, when you use these techniques is largely dependent upon your
personal preference. It is often extremely helpful to diagram on
problems, but sometimes it's unnecessary and can cost you precious
time. As you practice questions more and more, you will develop a
natural ability to sense when you feel like you should diagram vs.
when you shouldn't. Often, your gut reaction is right, as it's telling
you that you should or shouldn't do something because your brain is
either figuring stuff out without diagramming or it isn't and it's
telling you that diagramming might help.

I will say that when you encounter questions that have tons of
conditional logic, then it's almost always useful to diagram. That's
one occasion where diagramming is nearly universally beneficial (when
you have a bunch of conditional statements to parse through).

Does that make sense? Let us know if you have any other questions.

Bomi on January 3 at 08:32PM

I understand what you are saying, but what I have noticed is that the two types of questions sufficient and necessary covers is parallel reasoning/flawed, and must be true questions am I correct about this.

Ravi on January 5 at 06:17PM

@oeboda,

You're correct in that sufficient and necessary often appear in
parallel reasoning, flawed parallel reasoning questions, and must be
true questions, but these are not the only three question types that
sufficient and necessary appear on.

I recommend watching Mehran's video lesson on sufficient and necessary
again and paying close attention to the keywords that signify the
introduction of a sufficient or necessary condition. Knowing these
keywords well will make it so that you can easily identify when you
see conditional logic that contains sufficient and necessary
conditions in different question types.

As mentioned, sufficient and necessary can appear on any question
type, so it's important you're comfortable with being able to easily
identify sufficient and necessary conditions when you see them.