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- Question
- Statement:
(a) All girls do not like to marry.
(b) Some girls do not marry.
Assumptions:
I. All girls like to marry.
II. All girls do not marry.
Options- A. I is valid
- B. II is valid
- C. Both I and II are valid
- D. Both I and II are invalid
- Correct Answer
- Both I and II are invalid
ExplanationNone of the assumptions is valid. Assumption II is re-statement of the first statement.
- 1. Statements:
Based on the statements given below select the alternative conclusion which is true according to the given statements.
Conclusions:
I. All students in my class are bright.
II. Sarla is not bright.
Options- A. Sarla must work hard
- B. Sarla is not a student of my class
- C. Some students are not bright
- D. None?bright ones are not students Discuss
- 2. Statement:
All stones are hammers. No hammer is a ring. Some rings are doors.
All doors are windows.
Conclusions:
I. Some windows are stones.
II. Some windows are rings.
III. No window is a stone.
IV. Some rings are stones.
Options- A. Only I follows
- B. Only II follows
- C. Only III follows
- D. Only either I or III follows Discuss
- 3. Statement:
All pens are clocks. Some clocks are tyres. Some tyres are wheels.
Some wheels are buses.
Conclusions:
I. Some buses are tyres.
II. Some wheels are clocks.
III. Some wheels are pens.
IV. Some buses are clocks.
Options- A. None follows
- B. Only I follows
- C. Only II follows
- D. Only III follows Discuss
- 4. Statement:
All papers are clips. Some chips are boards. Some boards are lanes.
All lanes are roads.
Conclusions:
I. Some roads are boards.
II. Some lanes are chips
III. Some boards are papers
IV. Some roads are chips.
Options- A. Only I and II follow
- B. Only I and III follow
- C. Only I, II and III follow
- D. Only II, III and IV follow Discuss
- 5. Statement:
Some pencils are kites.
Some kites are desks.
All desks are jungles.
All jungles are mountains.
Conclusions:
I. Some mountains are pencils.
II. Some jungles are pencils.
III. Some mountains are desks
IV. Some jungles are kites.
Options- A. Only I and III follow
- B. Only I, II and III follow
- C. Only III and IV follow
- D. Only II, III and IV follow Discuss
- 6. Statement:
(I) All cities are towns.
(II) Some cities are villages.
Conclusions:
(I) All villages are towns.
(II) No village is a town.
(III) Some villages are towns.
Options- A. Only conclusion (III) follows
- B. Only conclusion (1) follows
- C. Only conclusion (II) follows
- D. None of these Discuss
- 7. Which one is true?
I. All players are not tall.
II. All basketball players are tall.
III. All tall people are players.
IV. Some players are tall.
Options- A. IV
- B. III.
- C. II.
- D. I. Discuss
- 8. 'All the members of the Tennis club are members of the Badminton club too." "No woman plays Badminton".
Options- A. Some women play Tennis
- B. No member of the Tennis club plays Badminton
- C. Some women are members of the Tennis club
- D. No woman is a member of the Tennis club Discuss
- 9. Statements:
Some Indians are educated.
Educated men prefer small families.
Conclusions:
(I) All small families are educated.
(II) Some Indians prefer small families.
Options- A. Only I follows
- B. Only II follows
- C. Both I and II follow
- D. Neither I nor II follows Discuss
- 10. All men are mortal.
Ramu is a man.
Options- A. No man is mortal
- B. Ramu is mortal
- C. Ramu is immortal
- D. All men are immortal Discuss
Syllogism problems
Search Results
Correct Answer: Sarla is not a student of my class
Explanation:
All student of a particular class (without any exception) are bright. And, Sarla is not bright. Therefore, Sarla cannot be the student of that particular class.
Correct Answer:
Explanation:
Some rings are doors + All doors are windows = I + A = I = Some rings are windows ? Conversion ? Some windows are rings(I) Hence II follows. All stones are hammers + No hammer is a ring = A + E = E No stones is a ring ? conversion ? No ring is a stone (E) Hence IV does not follows. No stone is a ring + Some rings are doors = E + I = O* = Some windows are not stones Hence either I or II follows as they form a complementary I-E pair.
Correct Answer: None follows
Explanation:
A + I and I + I both result is no conclusion.
Correct Answer:
Explanation:
Some boards are lanes + All lanes are roads = I + A = I = Some boards are roads ? Conversion ? Some roads are boards (I). Hence I follows. Some chips are boards + Some boards are lanes = I + I = No conclusion Hence II and IV does not follow. All papers are clips + Some chips are boards = I + A = No conclusion Hence II and IV does not follow.
Correct Answer: Only III and IV follow
Explanation:
Some kites are desks + All desks are jungles. = I + A = I = Some kites are jungles ? Conversion ? Some jungles are kites (I) Hence IV follows. some pencils are kites + Some jungles are kites = I + I = No conclusion Hence I and II does not follow. All desks are jungles + All jungles are mountains = A + A = A = All desks are mountains ? Conversion ? Some mountains are desks (I). Hence III follows.
Correct Answer: Only conclusion (III) follows
Explanation:
(i) All cities are towns ? Universal Affirmative (A - type).
(ii) Some cities are villages ? Particular Affirmative (I - type).
(iii) No village is a town ? Universal Affirmative (E - type).
(iv) Some villages are not towns ? Particular Negative (O type).
Some villages are cities. ?All cities are towns.
I + A ?I - type of Conclusion "Some villages are towns".
This is Conclusion III.
Correct Answer: II.
Explanation:
Statements 1 and 4 are more or less similar.
All tall people cannot be players.
So, Statement 2 seems to be true.
Correct Answer: No woman is a member of the Tennis club
Explanation:
No woman plays badminton. Therefore, no woman plays tennis.
Correct Answer: Only II follows
Explanation:
First statement is Particular Affirmative (I-type).
Second statement is Universal Affirmative (A-type)
Both the statements are already aligned. Thus,
Some Indians are educated. ? All Educated men prefer small families.
We know that,
I + A ? I-type Conclusion. Therefore, our derived Conclusion would be: "Some Indians prefer small families.
Venn-diagrams
Correct Answer: Ramu is mortal
Explanation:
All men (without exception) are mortal. And, Ramu is a man. Therefore, Ramu is mortal.
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