Hi all, can anyone give me a few words of wisdom in regards to Logical Reasoning Diagramming questions. I know all the rules however it seems whenever I am diagramming I either mix up the Sufficient or Necessary for the word 'only' or with words that have no keywords to determine which is which I either miss them entirely and therefore can not draw an appropriate conclusion. Any tips or tricks that help you is welcomed as I feel the more information I get the better I will be able to fully understand how to tackle these more effectively.
Thanks
-Frustrated.
LR Diagramming Help Please! Forum
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rekoobathetuba
- Posts: 25
- Joined: Thu Oct 08, 2015 10:34 am
Re: LR Diagramming Help Please!
Well that's a big question to answer, and one that I have been slowly working through myself, but I'll take a shot at it.
The sufficient condition indicates that the necessary condition must occur.
The necessary condition's occurrence is required in order for the sufficient condition to occur.
For example:
All dogs are mammals.
If you are a dog, then you MUST be a mammal, but if you are a mammal, then you are not necessarily a dog. You could be a rabbit, a bear, or manbearpig.
D-->M
Contrapositive: If you are not a mammal then you are not a dog
~M-->~D
Being a dog is sufficient because it indicates that you must also be a mammal.
Another example: Every car is blue. Ask yourself which is which. If it's blue is it necessarily a car? Or if it is a car then is it necessarily blue?
Check out these flash cards for some practice: https://quizlet.com/45598606/logical-re ... ash-cards/
Good luck!
The sufficient condition indicates that the necessary condition must occur.
The necessary condition's occurrence is required in order for the sufficient condition to occur.
For example:
All dogs are mammals.
If you are a dog, then you MUST be a mammal, but if you are a mammal, then you are not necessarily a dog. You could be a rabbit, a bear, or manbearpig.
D-->M
Contrapositive: If you are not a mammal then you are not a dog
~M-->~D
Being a dog is sufficient because it indicates that you must also be a mammal.
Another example: Every car is blue. Ask yourself which is which. If it's blue is it necessarily a car? Or if it is a car then is it necessarily blue?
Check out these flash cards for some practice: https://quizlet.com/45598606/logical-re ... ash-cards/
Good luck!
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MAPP
- Posts: 380
- Joined: Thu Jul 23, 2015 3:03 pm
Re: LR Diagramming Help Please!
Join the struggle bus. I haven't done much LR yet, but my plan is to drill the shit out of all the conditional LR questions until it's (hopefully) second natureJkoenig wrote:Hi all, can anyone give me a few words of wisdom in regards to Logical Reasoning Diagramming questions. I know all the rules however it seems whenever I am diagramming I either mix up the Sufficient or Necessary for the word 'only' or with words that have no keywords to determine which is which I either miss them entirely and therefore can not draw an appropriate conclusion. Any tips or tricks that help you is welcomed as I feel the more information I get the better I will be able to fully understand how to tackle these more effectively.
Thanks
-Frustrated.
