| Introductory Logic |
Quiz #3
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September 26, 2005
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| Name: ________________________ |
R. Hammack
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Score: _________
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1. Decide if the following immediate inference is valid or invalid.
Explain your work. (Consider using the Modern Square of Opposition or Venn diagrams.)
| No fertility drugs are solutions to every problem. Thus it is false that all fertility drugs are solutions to every problem. |
2. Translate the following sentences into standard-form categorical propositions.
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(a)
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Any bank that makes too many risky loans will fail. |
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(b)
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Unless the sun is shining, a rainbow cannot occur. |