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Course: LSAT > Unit 1
Lesson 5: Analytical Reasoning – Worked examples- Ordering setup | Overview | Rules and deductions
- Ordering setup | Given info–basic 1 | Worked example
- Ordering setup | Given info–basic 2 | Worked example
- Ordering setup | Given info–could be true | Worked example
- Ordering setup | Given info–cannot be true 1 | Worked example
- Ordering setup | Given info–cannot be true 2 | Worked example
- Ordering setup | Given info–must be true | Worked example
- Ordering setup | New info–could be true 1 | Worked example
- Ordering setup | New info–could be true 2 | Worked example
- Ordering setup | New info–could be true 3 | Worked example
- Ordering setup | Completely determines | Worked example
- Ordering setup | New info-must be true | Worked example
- Grouping setup | Overview | Rules and deductions
- Grouping setup | Given info–basic | Worked example
- Grouping setup | Given info–could be true | Worked example
- Grouping setup | Given info–must be false | Worked example
- Grouping setup | Given info–must be true 1 | Worked example
- Grouping setup | Given info–must be true 2 | Worked example
- Grouping setup | New info–could be true 1 | Worked example
- Grouping setup | New info–could be true 2 | Worked example
- Grouping setup | New info–must be true | Worked example
- Grouping setup | "Completely determines" | Worked example
- Mixed setup | Overview | Rules and deductions
- Mixed setup | Given info–basic | Worked example
- Mixed setup | Given info–could be true 1 | Worked example
- Mixed setup | Given info–could be true 2 | Worked example
- Mixed setup | Given info–must be true | Worked example
- Mixed setup | Given info–cannot be true | Worked example
- Mixed setup | New info–could be true | Worked example
- Mixed setup | New info–must be true 1 | Worked example
- Mixed setup | New info–must be true 2 | Worked example
- Mixed setup | Rule substitution | Worked example
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Ordering setup | New info–could be true 3 | Worked example
Example video showing how to approach a "New info: could be true" question on an ordering setup from the analytical reasoning section of the LSAT.
Video transcript
- [Instructor] Make sure
that you've already watched the set-up video, in which we
created this initial diagram, using the rules and making deductions. If M was begun in a later year than L, then which one of the
following could be true? This question is giving us a
new and temporary condition to consider the impact of. So if M was begun later than L, then which of the choices are
possible in that scenario? So, we have our chain of elements already from the initial set-up,
involving G, L, F, M and H. The new rule tells us
that M is later than L. We know from the initial
set-up, that M is before H. And that L is also before H. So that allows us to create a chain that's G, L, M, H in a row. And then from the initial
set-up, we also know that L is earlier than F. So let's re-draw our initial diagram, so that we can incorporate this new rule and it's new deductions into a new sketch, and that way don't get confused
with the initial diagram that we have. Alright, let's see what
deductions we can make from the new information that we have. If M, is sometime later than L, which it is in this question, that means that only G and
F could be the monuments that are paired in 601. Now we know that L has to be second, because in this question,
L has three monuments after it, H, F and M. That means that M has to be third, because M can't be fourth or
fifth according to rule three. And that leaves F and H to take up the fourth and fifth spots,
although we don't know in which order. So our answer is something
that could be true in this situation. A, F was begun in 603. Well this can't be true,
because M is in 603. B, G was begun in 602. This can't be true, because we deduced that
G has to be in 601. C tells that H was begun
in 605, this could be true, because we deduced that
either F or H could be in 605. For the record, choice D
is that L was begun in 603, we know this is false
because in this situation, L has to be in 602. And then E, is that S was begun in 604, and that must be false,
because S is in 601. So, C is the answer.