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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 | Given info–basic 1 | Worked example
Watch a demonstration of one way to approach a "Given info: basic orientation" question on an ordering setup from the analytical reasoning section of the LSAT.
Video transcript
- [Instructor] Before you
dive into the questions for this set up, make sure
to watch the set up video in which we created our initial diagram using the rules and in
which we made deductions from those rules. This in an orientation question. It asks, which one of the following could be an accurate matching of monuments to the years in which they were begun? Usually the fastest way to
approach these questions is not to go through
each choice one at a time to find the answer, but to start with the rules one by one and eliminate the choices
that violate each rule. For example, rule one
tells us that L was begun in a later year than G, but in an earlier year than F. So, if we scan through the choices for a choice in which this doesn't happen, we can eliminate C, because C has G first, F third and L fourth. That doesn't work. Rule two tells us that H was
begun no earlier than 604. We can cross out B,
because in B, H is in 603 and that is earlier than 604. Rule three, M was begun earlier than 604. This rule allows us to get rid of D because M is in 604 and we need M to be earlier than 604. Rule four tells us that
two of the monuments were begin in 601, and no
other monument was begun in the same year as any
of the other monuments. That means that A is out, because A has the two
monuments in 602, not in 601. That means that the answer is E, since it's the only one left standing. And it's worth noting that if we had gone through the choices and
compared them against the rules we would have had to go through the rules at least four times to get to the answer. But using the strategy
that we just employed we only had to go through the rules once.