Pure sequencing basic
44 flashcards covering Pure sequencing basic for the LSAT Logic Games section.
Pure sequencing in LSAT Logic Games involves arranging items, like people or events, into a specific order based on given rules. For example, you might have to line up runners in a race according to constraints, such as one person finishing before another. This basic form focuses on straightforward ordering without added complexities like grouping, making it a foundational skill for understanding relationships and dependencies.
On the LSAT, pure sequencing appears in Logic Games questions where you determine possible orders, identify what must be true, or find valid sequences from a set of rules. Common traps include overlooking subtle constraints or assuming flexibility where none exists, which can lead to incorrect answers. Focus on carefully mapping out rules with diagrams and practicing quick setups to handle these efficiently. For better results, always start by listing the entities and rules clearly.
Terms (44)
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Sequencing Game
A Logic Game type where you arrange items or entities in a specific order, such as a line or sequence, based on rules provided in the prompt.
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Linear Ordering
A basic structure in sequencing games where entities are placed in a straight sequence, like positions from first to last, without branching paths.
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Sequence Diagram
A visual tool for sequencing games that uses a line with slots to represent possible positions, helping to track where entities can or must go based on rules.
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Before Rule
A rule stating that one entity must come earlier in the sequence than another, such as A before B, which means A cannot be after B in any valid arrangement.
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After Rule
A rule indicating that one entity must follow another in the sequence, like A after B, ensuring B appears before A in every possible order.
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Immediately Before Rule
A rule requiring one entity to directly precede another without any entities in between, such as A immediately before B, meaning A is right before B.
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Immediately After Rule
A rule that places one entity directly following another, like A immediately after B, so B is right before A with no one in between.
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Not Before Rule
A rule prohibiting one entity from preceding another, such as A not before B, which means A must come after or at the same time as B if applicable.
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Not After Rule
A rule that prevents one entity from following another, like A not after B, indicating A must come before or at the same time as B.
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Fixed Position Rule
A rule assigning an entity to a specific spot in the sequence, such as A in the first position, which locks that entity in place for all scenarios.
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At Least One Before Rule
A rule stating that at least one entity must separate two others, like A at least one before B, meaning there is at least one spot between A and B.
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At Most One Before Rule
A rule allowing no more than one entity between two others, such as A at most one before B, permitting A immediately before B or with exactly one in between.
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Variable Positions
Spots in a sequence that can hold different entities based on rules, requiring you to consider multiple possibilities when entities are not fixed.
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Base of the Sequence
The foundational setup of a sequencing game, including the number of positions and any initial constraints, which you identify first to build your diagram.
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Inferences from Rules
Logical deductions made by combining rules in a sequencing game, such as realizing that if A is before B and B is before C, then A must be before C.
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Must Be True Question
A question type in sequencing games asking which arrangement is always true regardless of other possibilities, based on the rules provided.
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Could Be True Question
A question asking which arrangement is possible under the rules, meaning it fits at least one valid scenario in the sequencing game.
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Cannot Be True Question
A question requiring you to identify arrangements that violate the rules in every possible sequencing setup, ensuring no valid order allows it.
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Complete Diagram
A fully fleshed-out visual representation of all possible sequences that satisfy the rules, used to answer questions accurately in a sequencing game.
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Partial Diagram
An initial sketch of a sequencing game that shows only the constraints applied so far, helping to build toward complete diagrams by adding inferences.
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Overlapping Rules
Situations in sequencing games where multiple rules affect the same entities, requiring you to reconcile them to find consistent arrangements.
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Contradictory Rules
Rules in a sequencing game that cannot all be true simultaneously, though rare, signaling an invalid setup or the need to check for errors.
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Skimming for Rules
A strategy in sequencing games where you quickly read the prompt to identify and extract all rules before starting to diagram.
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Placing Entities
The process of assigning entities to positions in a sequence based on rules, ensuring each placement respects all constraints.
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Notching in Diagrams
A diagramming technique in sequencing games where you mark restrictions on a line, like notches to indicate minimum spaces between entities.
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Common Trap: Assuming Immediacy
A frequent error in sequencing games where test-takers assume 'before' means 'immediately before,' leading to incorrect diagrams and answers.
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Strategy: List Possibilities
An approach for sequencing games with few variables, where you enumerate all valid orders to compare against question options.
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Strategy: Use a Timeline
Drawing a horizontal line to represent the sequence in games, helping visualize the order and apply rules step by step.
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Entity with Multiple Constraints
An entity in a sequencing game affected by several rules, requiring careful placement to satisfy all conditions simultaneously.
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Unconstrained Entity
An entity in a sequencing game with no specific rules, which can be placed flexibly as long as it doesn't violate other constraints.
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Sequence with Ties
A variation in sequencing games allowing entities to share the same position or rank, though less common in pure sequencing.
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Minimum Positions Rule
A rule specifying the least number of spots an entity must be from another, like A at least two before B, creating a buffer.
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Maximum Positions Rule
A rule limiting how far apart entities can be, such as A at most three before B, capping the distance in the sequence.
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Circular Sequence
A less common sequencing type where the order loops, like a circle, but in pure sequencing, it's typically linear.
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Hybrid Sequencing Game
A sequencing game that combines with other elements, like grouping, but in basic pure sequencing, it remains straightforward ordering.
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Question Stem Analysis
Examining the wording of sequencing game questions to determine if they ask for necessities, possibilities, or impossibilities based on the rules.
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Rule Interactions
How different rules in a sequencing game intersect, such as one rule reinforcing or limiting another to produce new inferences.
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Floating Entities
Entities in a sequencing game that can move to various positions without fixed rules, requiring you to test placements systematically.
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Sequence Length
The total number of positions in a sequencing game, which is often stated or implied and must be accounted for in diagrams.
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Redundant Rules
Rules in a sequencing game that repeat information or are implied by others, which you can note to simplify your diagram.
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Advanced Inference: Chaining
Linking multiple rules in a sequence to deduce further constraints, like if A before B and B before C, then A before C as a chain.
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Trap: Overlooking Exceptions
A common mistake in sequencing games where players ignore possible exceptions to rules, leading to incomplete diagrams.
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Strategy: Prioritize Fixed Rules
In sequencing games, first applying rules that fix entities in place to build a stable base before addressing flexible ones.
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Partial Ordering
A situation in sequencing where not all entities are fully ordered, leaving some flexibility that must be explored for questions.