1. Explain Venn Diagram method of testing validity. Test the validity or invalidity of the following argument using Venn Diagram.
"Some reformers are fanatics, so some idealists are fanatics, since all reformers are idealists".
OR
Write down the nine rules of inference and ten rules of replacement. Construct a formal proof of validity for the following argument.
Jv(..., KvJ)
Kv(..., JvK)
J=K

2. Give a detailed account of the development of symbolic logic and its utility.
OR
Describe the structure of various syllogisms with examples.

3. Answer any two questions of the following in
about 250 words each:

What is Dilemma? What are the methods of avoiding Dilemma

Write a note on fallacies of Presumption.

Explain square of opposition.

Write a note on conditional proof and rule of strengthened conditional proof.

4. Answer any four questions of the following in
about 150 words each:

Give a description of Connotation and denotation.

How do you relate major, minor and middle terms in a syllogism?

Write a note on traditional and symbolic logic.

EIO is valid and IEO is invalid in all the figures. Explain.

Explain contraposition with an example.

Distinguish between truth and validity.

5. Write short notes on any five of the following in
about 100 words each:

Multivalued logic

Obversion

Categorical Proposition

Figure and Mood

Tautology and Contradictory

Logic gate

Free variable

Multiply General Proposition.