1. What is Categorical Syllogism? Explain the rules governing the validity of categorical syllogisms.
OR
What is Fallacy Explain the fallacies of Presumption.

2. Construct formal proof of validity for the given argument.
A
C
D
OR
What do you understand by Quantification? Explain the quantification rules.

3. Answer any two of the following in not more than 250 words each

Draw the traditional square of opposition and explain the relations of sub-alternation and contradiction.

Distinguish between material equivalence and logical equivalence.

Use conditional proof to construct formal proof of validity for the given argument.

S
v S v

Draw the symbols for basic logic-gates and explain their logical functions.

4. Answer any four of the following in not more than 150 words each

What are propositions? Briefly explain their nature.

Explain mixed hypothetical syllogism.

Draw venn diagram for AOO -II.

Construct truth table for implication.

Explain contraposition with an example.

Draw truth tables for NOR and NAND gates.

5. Write short notes on any five of the following in not more than 100 words:

Disjunction

Figure and mood

Truth and validity

Argument from ignorance

Obversion

Difference between rules of inference and replacement.

Propositional function

Fuzzy logic