Upgrade to remove ads
Only $2.99/month

LSAT Logic games

Terms in this set (13)

All the words in this group follow this translation rule: The ideas introduced by (i.e., immediately following) these words are the sufficient conditions.
GROUP 1 WORDS: IF (OR FOR), WHEN, WHERE, ALL, THE ONLY, EVERY, ANY, ANYONE
All the words in this group follow this translation rule: The ideas introduced by (i.e., immediately following) these words are the necessary conditions.
GROUP 2 WORDS: ONLY, ONLY IF, ONLY WHEN, ONLY WHERE, ALWAYS, MUST,IS ESSENTIAL, IS REQUIRED, IS/ARE
1) Group three words and 2) their rule
1) GROUP 3 WORDS: UNLESS, UNTIL, OR, WITHOUT

2) You pick either idea, then negate that idea, then make that idea the sufficient condition.
1) Group four words and 2) their rule
1) GROUP 4: NO, NONE, NOT BOTH, NEVER, CANNOT

2) You pick either idea, then negate that idea, then make that idea the necessary condition.
Neither Nor
not one and not the other, eg neither S nor Y are in the same class as M. Can be translated as S is not in the class with M s -> m/ and Y is not in the class as m y-> m/
Steps to translate
Step 1) Identify the logical operator

Step 2) Identify the two main concepts (or groups, categories, events or ideas)"

Step 3) Assign symbols to the two main concepts

Step 4) Apply the translation rule

Step 5) Find the contrapositive

Step 6) Translate back to English
Embedded conditionals
1. And/or in the sufficient
2. And/or in the necessary
3. How to find the contrapositive
1) AND- DON'T SPLIT
OR- SPLIT

2) AND- SPLIT
OR- DONT SPLIT

3. -DEMORGANS LAW

-AND BECOMES OR AND VICE VERSA
-NEGATE BOTH ELEMENTS
BICONDITIONALS
1)INDICATORS
2)TYPES
1) -(EITHER) OR, BUT NOT BOTH

*alan or cris go to the park, but not both

BREAKDOWN
alan or cris go to the park

alan or chris cannot both go to the park

-IF AND /BUT ONLY IF (NO TO BOTH OR YES TO BOTH)

*alan attends meeting IF AND/BUT ONLY IF cris attends the meeting

BREAKDOWN
alan attends the meeting if cris attends the meeting

alan attends the meet only if cris attends the meeting

-... BUT NOT OTHERWISE

*alan goes to the park if cris goes to the park then cris goes to the park, BUT NOT OTHERWISE

BREAKDOWN
alan goes to the park if cris goes to the park

and

alan doesnt go to the park if cris doesnt go to the park

-EXCEPT

*alan goes to the park everyday except for days
cris goes to the park

2)ALWAYS TOGETHER, NEVER APART A <-> B AND /A <-> /B
ALWAYS APART, NEVER TOGETHER A/ <-> B AND B <-> A/
EMBEDDED RULE
ONLY WHEN ITS AN ARROW eg A and B -> (C -> D) you can move the inner condition out of the parenthesis and make it an AND or an OR *making it opposite
1) in between sentence rule
A Shiba Inu being well fed, cannot happen without an attentive owner, is necessary for its being good natured. (start off ignoring middle sentence then attend to it)

GN -> WF -> AO
Logic games
Positive sufficient = or truth table
negative sufficient = not both truth table
1) sufficient satisfied
2) sufficient failed
3) necessary failed
4) necessary satisfied
1) rule triggers, necessary must be satisfied
2) rule irrelevant, necessary free to satisfy or fail
3) rule triggers, sufficient must failed
4) rule irrelevant, sufficient free to satisfy or fail
Key word for logic games
Key word "it contains"
YOU MIGHT ALSO LIKE...