IGNOU MPYE-01
- Logic,
Latest Solved Assignment
(December 2023 - June 2024)

1. What is Boolean algebra? Write an essay on Logical gates, showing their graphical symbols and representation in Truth table.
Or
What is Multi valued logic? What is the role of symbolic logic in multi valued logic? Discuss.

2. Explain Square of oppositions with some examples.
Or
What is conditional proof method? Write an essay on the significance and the advantage of conditional proof method.

3. Answer any two questions in about 250 words each. (Word limit is only for theory related questions)

a) Write a note on existential import.
b) Apply quantification rules to prove the validity/invalidity of the following syllogistic arguments.
i) All dogs are animal. All animal are living being. Therefore, No dogs are living being.
ii) Some philosophers are Women. All philosophers are studious persons. Therefore some studious persons are women.
iii) No men are mortal. Ram is a man. Therefore, Ram is not mortal.
iv) Some musicians are singer. Some cricketers are singer. Therefore some musicians are cricketers.
c) Write a note on the significance of symbolic logic.
d) What is the difference between material implication and logical implication? Give some examples.

4. Answer any four questions in about 150 words each. (Word limit is only for theory related questions

a) Write a note on fallacy of false cause.
b) Explain the significance of random variable.
c) Differentiate between proposition and argument with suitable examples.
d) “All sentences are not propositions.” Discuss.
e) Symbolize the following using quantifiers.
i) All birds are black.
ii) Some women are academicians.
iii) No singers are musicians.
iv) Some Indians are not businesspersons.
v) All good books are not expensive.
f) Write a note on the figure of a syllogism?

5. Write short notes on any five in about 100 words.

a) Converse fallacy of accident
b) Multi-valued logic
c) Categorical Syllogism
d) Inductive reasoning
e) Modus Ponens
f) Dilemma
g) Enthymeme
h) Logic

1. Write an essay on Logical gates, showing their graphical symbols and representation in Truth table.
Or
What is dilemma? How we can avoid dilemma?

2. What is venn diagram? Proof the validity/invalidity of the following using Venn Diagram method,
a) Some pens are pencils. Some pencils are blue. Therefore some pens are blue.
b) No scientist is musician. All musicians are poets. Therefore, Some Scientists are poets.
c) All dogs are animals. Some animals are wild animals. Therefore some dogs are not wild animals.
Or
What is conditional proof method? Write an essay on the significance and the advantage of conditional proof method.

3. Answer any two questions in about 250 words each. (Word limit is only for theory related questions)

a) I) What is Quantification Theory?
II) Apply quantification rules to prove the validity/invalidity of the following syllogistic arguments.
i) All substances have qualities. Some qualities have actions. Therefore, Some substances have actions.
ii) Some politicians are doctors. All doctors are good not orators. Therefore, Some Politicians are good orators.
b) Write an essay on the square of opposition.
c) Write a note on Boolean Algebra
d) Write short notes on, i) Fallacy of undistributed middle term, ii) Distribute of the terms.

4. Answer any four questions in about 150 words each. (Word limit is only for theory related questions)

a) Write a note on Complex destructive dilemma.
b) State the differences between monadic and dyadic models.
c) Write a note on the problems of induction.
d) Write an essay on the fallacy of presumption.
e) Symbolize the followings using quantifiers.
i) Some artists are not scientists.
ii) Some students of ignou are government employee.
iii) All horses are not mammals.
iv) Some pencils are not blue.
v) Some dogs are cats.
f) Write a note on the laws of thought.

5. Write short notes on any five in about 100 words.

a) Denotation
b) Disjunction
c) Implication
d) Contrary
e) Modus Tollens
f) Mood
g) Fuzzy-genetic Algorithms
h) Contradiction