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## LSAT

### Course: LSAT > Unit 1

Lesson 3: Analytical Reasoning – Articles- Getting started with Analytical Reasoning
- How to approach ordering setups
- How to approach grouping setups
- How to approach mixed setups
- Given info: basic orientation | Quick guide
- Given info: could be true/false | Quick guide
- Given info: must/cannot be true/false | Quick guide
- New info: could be true/false | Quick guide
- New info: must/cannot be true/false | Quick guide
- Equivalent rule, min-max and completely determines | Quick guide
- Equivalent rule | Learn more
- Study plan for analytical reasoning | Getting more than 10 right
- How to use multiple scenarios in analytical reasoning setups
- Deductions in analytical reasoning | Introduction
- Deductions in analytical reasoning | Practice
- Diagram notation conventions for analytical reasoning setups

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# Equivalent rule, min-max and completely determines | Quick guide

## Find an equivalent rule

You’re being asked to identify a condition that would have the

**same effect**on the setup, if substituted for one of the existing rules. The answer will be a condition that, when combined with the other original rules of the setup, will result in*exactly*the same possible outcomes as the rule it's replacing. In other words, it will restrict*exactly*as much as the rule it’s replacing—no more and no less.### Checklist

**✓ Understand the rule that you’re replacing.**Notice what the rule actually says. This might seem obvious, but it can be easy to get bogged down in inferences and forget what the actual rule is. The correct choice must restrict the outcomes in the same way—so, it must meet the conditions outlined in the original rule.

**✓ Understand how the rule you’re replacing relates to other rules**What can you infer? For instance, if

**Rule 1**is that

**L**is before

**M**, and

**Rule 2**is that

**M**is immediately before

**N**, then we can infer that

**L**is before

**N**.

**✓ Rule out wrong choices.**It’s possible that an answer will jump out at you, but it’s unlikely. With

**find an equivalent rule**questions, you’ll often be better off eliminating wrong choices. So, go over the choices, and see what you can infer from them. If a choice

*doesn’t*constrain the elements in the same way that the original rule does, eliminate it. Often, wrong choices will match an

*inference*we made from the original rule, but won’t actually give us the

*initial constraints*of the rule. This is something to watch out for.

**✓ Try it out! (Optional):**If you have time, it can be a good idea to test the choice you think is right. Plug the new condition into your setup. Do you get the same inferences? If so, that’s the answer.

## Minimum/Maximum

For these rarer questions, you’re asked to determine what the

**minimum**or**maximum**number of elements are, in either the given scenario, or in a scenario with a new condition. It’s generally helpful and quicker to start with either the minimum*or*the maximum, so that you can eliminate choices instead of trying to find the answer immediately.### Checklist for min/max questions

**✓ If you’re starting with the minimum, look for the smallest number listed as a possible minimum in the choices**Test it—does it work? Then eliminate any choices with

*bigger*numbers than that minimum. Continue testing until you have established a minimum.

**✓ From the**Does it work? Then eliminate any choices with

*maximum*possibilities in the remaining choices, test the*biggest*one*smaller*numbers than that maximum. Continue testing until you have the answer.

## Completely determines

For a

**completely determines**question, the answer will allow you to deduce a*complete picture*, once you incorporate the choice’s information. The wrong choices will lead to an incomplete picture. It’s exceedingly rare that you would be able to see the answer simply by looking at your**initial diagram and rules**, so it’s often best to move quickly to testing the choices.### Checklist for completely determines questions

**✓ Test each choice, by incorporating the condition in the choice into a**Are you able to continue making deductions all the way to a complete picture? Then that’s your answer!

*new*, bare-bones diagram, and making deductions**✓ If you stall on deductions, remember that**Don’t try to force a complete picture if it isn’t happening. The answer will force a complete picture without you needing to improvise.

*four*of the wrong choices will lead to exactly that result!## Want to join the conversation?

- Is there a place to practice equivalent questions? I am having the hardest time with them and would like to find a place I can study and practice just those types of questions(33 votes)
- Could you include an example of completely determines?(15 votes)