# Formal logic.txt

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1. Synonyms of some
• Some
• Many
• At least some
• At least one
• A few
• A number
• Several
• Part of
• A portion
2. Diagram some W's are not Z's
• W<------->notZ
• With S above
3. Diagram
Not all T's are V's
• T<------->notV
• With S above
4. Define some
At least one, possibly all
5. Define most
A majority, possibly all
6. Diagram
Most W's are not Z's
• W------->notZ
• With M
7. Synonyms of most
• Most
• A majority
• More than half
• Almost all
• Usually
• Typically
8. Is there a contrapositive for some and most statements?
No, because they do not necessarily encompass an entire group, only the arrows like ALL have contrapositive.
9. Diagram
No X are Y
• X------>notY
• X<--/-->Y
10. What do you look for when making inferences in formal logic?
The weakest link and relevant negativity
11. Does two double not arrows in a row produce an inference?
No
12. What do some and most need to make an inference?
Arrows that encompass all or none
13. What is the one case when two most produce an inference and what is it?
A<----m---- B ----m---->C

Some A's are C's

## Card Set Information

 Author: spedrasr05 ID: 21021 Filename: Formal logic.txt Updated: 2010-05-28 10:03:50 Tags: FL Folders: Description: FL Show Answers:

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