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Логика-философия на английском №1 / Logic-Philosophy in English #1
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- 2019 год
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1. Can we know for sure?
a) the conclusion is true or false in an ending where the premises are true and the deduction valid?
b) the conclusion is true or false in an ending where the premises are false and the deduction valid?
c) the conclusion is true or false in an ending where the premises are true and the deduction invalid?
d) the premises are true or false in an ending where the conclusion is false and the deduction valid?
The answers must be justified.
2. Formulate the following syllogisms with letters. Use Euler charts to determine if they are valid:
a) All logicians are self-absorbed
All self-absorbed are beautiful___
All logics logicians are beautiful
b) Aristotle is beautiful
No beautiful is self-absorbed
Aristotle is not self-absorbed
c) Some Europeans are Norwegians
Some Norwegians are logicians___
Some Europeans are logicians
d) All logicians are beautiful
Some beautiful are self-absorbed___
Some self-absorbed are logicians
3. Are the following conclusions logically valid? The answer must be justified.
a) If the exam is difficult, the earth will go under
Exam is difficult___________________
Earth is going down
b) If the exam is difficult, Per fails.
Exam is not difficult_____________
Per does not iron fails
c) If q, then p
Not p_____
Not q
Отвеченные вопросы приведены в содержании.
Нету.
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