Fichas
LR
Fichas del conjunto (17)
- 1General Approach to Logical Reasoning1. Take a few seconds to identify question stem + read the stimulus.
2. Determine if it is an argument or not?
-If YES, then identify conclusion, premises, the context, and evaluate for assumptions made.
-If NO, then piece together info, anticipate the inference.
3. Anticipate correct answer choice.
4. Scan and eliminate as many as possible.
5. Decide between remaining answers. - 2Sufficient & Necessary J -> F What about /F -> /J/F is sufficient
/J is necessary - 3To get from one statement in Logic to its contrapositive, you apply a two-step transformation process.Step 1. Switch the two symbols around the arrow.
Step 2. Slap a negation sign on each symbol. - 4Logical Indicators (“some” “most” and “few”)Logical indicators lay down the structure of the sentence as opposed to the content.
- 5Conditional RelationshipConditional relationship with each other is where the idea following the “if” is the sufficient condition and the other idea is the necessary condition.
- 6GROUP 1 RULEAll the words in Group 1 follow this translation rule:
The ideas introduced by (i.e., immediately following) these words are the sufficient conditions.
SUFFICIENT - 7GROUP 1 Logical Indicators1. If
2. When
3. Where
4. All
5. The Only
6. Every
7. Any - 8GROUP 2 RULEGroup 2 Rule: the idea immediately following the logical indicator is the necessary condition.
NECESSARY - 9GROUP 2 Logical Indicators1. Only
2. Only if
3. Only when
4. Only where
5. Always
6. Must - 10GROUP 3 RULEGroup 3 rule: You pick either idea, then negate that idea, then make that idea the sufficient condition.
NEGATE (anything) THEN SUFFICIENT - 11GROUP 3 Logical Indicators1. Unless
2. Until
3. Or
4. Without - 12“Or” and “either or” are confusing. They have three different meanings:1. The "inclusive or" meaning “and/or”
2. The "exclusive or" meaning "or, but not both"
3. Simply "and" - 13GROUP 4 RuleGroup 4 rule: You pick either idea, then negate that idea, then make that idea the necessary condition.
NEGATE NECESSARY - 14GROUP 4 Logical Indicators1. No
2. None
3. Not both
4. Never
5. Cannot - 15Valid Argument Group 1 (of 9) Affirming the SufficientA –> B
A
_______
B - 16Valid Argument Group 2 (of 9) Denying the NecessaryA –> B
/B
_____
/A - 17Valid Argument Group 3 (of 9) The TransitiveA –> B –> C
_____
A –> C
Información
- Descripción
- Fichas sobre LR, creado por K K el 02/05/2020.
- Creado por
- K K
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