Discussion
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- Question
- Statement:
Some bags are plates. Some plates are chairs. All chairs are tables.
Conclusions:
I. Some tables are plates.
II. Some chairs are bags.
III. No chair is bag.
Options- A. Only I follows
- B. Only either II or III follows
- C. Only I and either II or III follows
- D. Only III follows
- Correct Answer
- Only I and either II or III follows
ExplanationSome pates are chairs + All chairs are tables = I + A = I = Some plates are tables ? conversion ? Some tables are plates(I). Hence I follows. Some bags are plates + Some plates are chairs = I + I = No conclusion Hence II and III do not follow. By combination. However, the two form a complementary E-I pair, Hence either I or III follows.
- 1. Statement:
All brick are stones. Some stones are rocks. All rocks are mountains.
Conclusions:
I. Some mountains are stones.
II. Some mountains are bricks.
III. Some stones are bricks.
Options- A. Only I follow
- B. Only III follow
- C. Only I and III follow
- D. All follow Discuss
- 2. Statement:
All furniture are jungles. No jungle is road. Some road are hills.
Conclusions:
I. Some roads are furniture.
II. Some jungles are furniture.
III. Some hills are jungles.
Options- A. Only I follow
- B. Only II follow
- C. Only III follow
- D. Only I and III follow Discuss
- 3. Statement:
Some radios are telephones. All telephones are mirrors. All mirrors are desks.
Conclusions:
I. Some radios are desks.
II. Some radios are mirrors.
III. Some desks are telephones.
Options- A. Only I and II follow
- B. Only I and III follow
- C. Only II and III follow
- D. All follow Discuss
- 4. Statements:
1. All elephants are men.
2. All men are socks.
Conclusions:
I. Some socks are elephants.
II. All elephants are socks.
Options- A. Only Conclusion I follows
- B. Only Conclusion II follows
- C. Both Conclusions I and II follow
- D. Neither Conclusion I nor II follows Discuss
- 5. Statements:
All boys are tall.
Rajiv is a boy.
Conclusions:
I. Rajiv is tall.
II. Rajiv is not tall.
Options- A. Only Conclusion I follows
- B. Only Conclusion II follows
- C. Both Conclusion I and Conclusion II follow
- D. Neither Conclusion I nor Conclusion II follows Discuss
- 6. Statement:
All desks are rooms. Some rooms are halls. All halls are leaves.
Conclusions:
I. Some leaves are desks.
II. Some halls are desks.
III. Some leaves are rooms.
Options- A. None follows
- B. Only I follows
- C. Only II follows
- D. Only III follows Discuss
- 7. Statement:
Some doctors are lawyers. All teachers are lawyers. Some engineers are lawyers. All engineers are businessmen.
Conclusions:
I. Some teachers are doctors.
II. Some businessmen are lawyers.
III. Some businessmen are teachers.
IV. Some lawyers are teachers.
Options- A. None follows
- B. Only II follows
- C. Only III follows
- D. Only II and IV follow Discuss
- 8. Statement:
All plastics are glasses.
Some sponges are glasses.
All sponges are clothes
All clothes are liquids.
Conclusions:
I. All liquids are sponges.
II. Some plastics are clothes.
III. All glasses are plastics.
IV. All liquids are clothes.
Options- A. None follows
- B. Only either II or IV follows
- C. Only IV follows
- D. Only II and IV follows Discuss
- 9. Statement:
All sands are beaches. All shores are beaches. Some beaches are trees. All trees are hotels.
Conclusions:
I. Some shores are hotels.
II. All beaches are shores
III. Some beaches are hotels.
IV. Some sands are trees.
Options- A. None follows
- B. Only II follows
- C. Only either I or III follows
- D. Only IV follows Discuss
- 10. Statement:
All parrots are pigeons. Some crows are pigeon. Some sparrows are crow. All sparrows are koels.
Conclusions:
I. Some koels are crows.
II. Some parrots are crows.
III. Some sparrows are pigeons.
IV. No crow is a parrot.
Options- A. None follows
- B. Only I follow
- C. Only II follows
- D. Only III follows Discuss
Syllogism problems
Search Results
Correct Answer: Only I and III follow
Explanation:
Some stones are rocks + All rocks are mountains = I + A = I = Some stones are mountains ? conversion ? Some mountains are stones (I). Hence II follows. All brick are stones + Some stones are mountains = A + I = No conclusion Hence II does not follow. All brick are stones (A) ? conversion ? Some stone are bricks(I). Hence III follows.
Correct Answer: Only II follow
Explanation:
All furniture are jungles + No jungle is road = A + E = E = No furniture is road ? conversion ? No road is furniture (E) Hence I does not follows. All furniture are jungles (A) ? conversion ? Some jungles are furniture (I). Hence II follows. No jungle is road + Some roads are hills = E + I = O* = Some hills are not jungles Hence III does not follows.
Correct Answer: All follow
Explanation:
Some radios are telephones + All telephones are mirrors = I + A = I = Some radios are mirrors Hence II follows Some radios are mirrors + All mirrors are desks = I + A = I = Some radios are desks Hence I follows. All telephones are mirrors + All mirrors are desks = A + A + = All telephones are desks ? conversion ? Some desks are telephones (I). Hence III follows.
Correct Answer: Both Conclusions I and II follow
Explanation:
Both the Premises are Universal Affirmative (A?type).
All elephants are men. ? All men are socks.
A + A ? A?type of Conclusion "All elephants are socks."
This is Conclusion II.
Conclusion I is the Converse of it.
Correct Answer: Only Conclusion I follows
Explanation:
Both the Premises are Universal Affirmative (A ? type).
Rajiv is a boy. ? All boys are tall.
A + A ? A-type of Conclusion "Rajiv is tall".
This is Conclusion I.
Venn diagrams:
Correct Answer: Only III follows
Explanation:
Some rooms are halls + All halls are leaves = I + A = I = Some rooms are leaves ? conversion ? Some leaves are rooms(I) Hence III follows. All desks are rooms + Some rooms are halls = A + I = No conclusion Hence II and consequently I do not follow.
Correct Answer: Only II and IV follow
Explanation:
All teachers are lawyers (A) ? conversion ? Some lawyers are teachers (I). Hence IV follows. Now, Some doctors are lawyers + Some lawyers are teachers = I + I = No conclusion Hence I does not follow. Some engineers are lawyers (I) ? conversion ? Some lawyers are engineers + All engineers are businessmen = I + A = I = Some lawyers are businessmen ? conversion Some businessmen are lawyers Hence II follows. But , All teachers are lawyers + Some lawyers are businessmen = A + I = No conclusion Hence III does not follow.
Correct Answer: None follows
Explanation:
All sponges are clothes + All clothes are liquids = A + A = All sponges are liquids ? conversion ? Some liquids are sponges (I). Hence I does not follows. All plastics are glasses + conversion of Some sponges are glasses = A + I = No conclusion Hence II does not follow. All plastics are glasses (A) ? conversion ? Some glasses are plastics (I) Hence III does not follow. All clothes are liquids(A) conversion Some liquids are clothes (I) Hence IV does not follow.
Correct Answer:
Explanation:
Some beaches are tree + All trees are hotels = I + A = I = Some beaches are hotels Hence III follows. Now, All shores are beaches + Some beaches are hotels = A + I = No conclusion Hence I does not follow. All shores are beaches (A) ? conversion ? Some beaches are shores (I). Hence II does not follow. All sands are beaches + Some beaches are trees = A + I = No conclusion Hence IV does not follow.
Correct Answer: Only II follows
Explanation:
Some sparrows are crow + Some crows are pigeons = I + I = No conclusion Hence III does not follow. Some crows are pigeons (I) ? conversion ? Some pigeons are crows (I) Now, all parrots are pigeons + Some pigeons are crows = A + I = No conclusion Hence II does not follow. Nor does IV follow. However conversion II from an I-E complementary pair with IV, Hence either I or IV follows. Some sparrows are crows(I) ? conversion ? Some crows are sparrows + All sparrows are koels ? conversion ? Some koels are crows (I). Hence I.
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