1. Define the following concepts:
a) textbook;
b) father;
c) house.
2. In the following judgments, determine the subject, predicate and connective, and also bring them to the canonical form:
a) the wolf is not a sheep’s friend;
b) judicial reforms of 1861 transformed the entire justice system in Russia;
c) some of the paintings by young artists were sold at auction.
3. Identify simple initial judgments in a complex judgment and bring the complex judgment to a symbolic form.
a) the doors were with or without stained glass;
b) the job of every citizen is to protect nature, preserve its wealth;
c) amnesty can be general or partial.
4. Construct truth tables for the following complex judgments, presented in symbolic form:
5. Draw a conclusion through transformation from the following premises:
a) all roads lead to Rome;
b) not all crimes are committed with malicious intent;
c) no one will embrace the immensity.
6. Draw a conclusion by means of reversal from the following premises:
a) all roads lead to Rome;
b) not all crimes are committed with malicious intent;
c) no one will embrace the immensity.
7. Draw a conclusion by contrasting the predicate from the following premises:
a) all roads lead to Rome;
b) not all crimes are committed with malicious intent;
c) no one will embrace the immensity.
8. Draw a conclusion according to the rules of a simple categorical syllogism (if possible) from the following premises. If it is impossible to draw a conclusion, indicate the reason.
a) no medicine tastes good. Alexandria leaf - medicine;
b) all British people are brave. No sailor is a braggart;
c) some pigs are wild. All pigs are fat.
TASK AS A GIFT
8. Draw a conclusion according to the rules of a simple categorical syllogism (if possible) from the following premises. If it is impossible to draw a conclusion, indicate the reason.
a) no medicine tastes good. Alexandria leaf - medicine;
b) all British people are brave. No sailor is a braggart;
c) some pigs are wild. All pigs are fat.
Solution:
A) Alexandria leaf is unpleasant to the taste.
B) The conclusion cannot be drawn. Error of excluded terms of the same sign, the existence of which is not asserted.
C) Some wild animals are fat.
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