Discussion
Home ‣ Logical Reasoning ‣ Logical Deduction Comments
- Question
Statements: Some dreams are nights. Some nights are days.
Conclusions:
- All days are either nights or dreams.
- Some days are nights.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow
- Correct Answer
- Only conclusion II follows
ExplanationSince both the premises are particular, no definite conclusion follows. However, II is the converse of the second premise and thus it holds. - 1. Statements: All hill stations have a sun-set point. X is a hill station.
Conclusions:
- X has a sun-set point.
- Places other than hill stations do not have sun-set points.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 2. Statements: All film stars are playback singers. All film directors are film stars.
Conclusions:
- All film directors are playback singers.
- Some film stars are film directors.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 3. Statements: All good athletes win. All good athletes eat well.
Conclusions:
- All those who eat well are good athletes.
- All those who win eat well.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 4. Statements: All fishes are grey in colour. Some fishes are heavy.
Conclusions:
- All heavy fishes are grey in colour.
- All light fishes are not grey in colour.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 5. Statements: Some swords are sharp. All swords are rusty
Conclusions:
- Some rusty things are sharp.
- Some rusty things are not sharp.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 6. Statements: All jungles are tigers. Some tigers are horses.
Conclusions:
- Some horses are jungles.
- No horse is jungle.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 7. Statements: All poles are guns. Some boats are not poles.
Conclusions:
- All guns are boats.
- Some boats are not guns.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 8. Statements: Many scooters are trucks. All trucks are trains.
Conclusions:
- Some scooters are trains.
- No truck is a scooter.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 9. Statements: Some papers are pens. Angle is a paper.
Conclusions:
- Angle is not a pen.
- Angle is a pen.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
- 10. Statements: All birds are tall. Some tall are hens.
Conclusions:
- Some birds are hens.
- Some hens are tall.
Options- A. Only conclusion I follows
- B. Only conclusion II follows
- C. Either I or II follows
- D. Neither I nor II follows
- E. Both I and II follow Discuss
Logical Deduction problems
Search Results
Correct Answer: Only conclusion I follows
Explanation:
Since both the premises are universal and affirmative, the conclusion must be universal affirmative and should not contain the middle term. So, only I follows.
Correct Answer: Both I and II follow
Explanation:
Since both the premises are universal and affirmative, the conclusion must be universal affirmative and should not contain the middle term. So, I follows. II is the converse of the second premise and so it also holds.
Correct Answer: Neither I nor II follows
Explanation:
Since the middle term 'good athletes' is distributed twice in the premises, the conclusion must be particular and should not contain the middle term. So it follows that 'Some of those who win, eat well'.
Correct Answer: Only conclusion I follows
Explanation:
Since one premise is particular, the conclusion must be particular and should not contain the middle term. So, it follows that 'Some heavy things are grey in colour'. I is a cumulative result of this conclusion and the first premise. Thus, only I holds.
Correct Answer: Only conclusion I follows
Explanation:
Since one premise is particular, the conclusion must be particular and should not contain the middle term. So, I follows. Since both the premises are affirmative, the conclusion cannot be negative. Thus, II does not follow.
Correct Answer: Either I or II follows
Explanation:
Since the middle term 'tigers' is not distributed even once in the premises, no definite conclusion follows. However, I and II involve only the extreme terms and form a complementary pair. So, either I or II follows.
Correct Answer: Neither I nor II follows
Explanation:
Clearly, the term 'guns' is distributed in both the conclusions without being distributed in any of the premises. So, neither conclusion follows.
Correct Answer: Only conclusion I follows
Explanation:
Since the first premise is particular, the conclusion must be particular and should not contain the middle term. Thus, only I follows.
Correct Answer: Either I or II follows
Explanation:
Since the middle term 'papers' is not distributed even once in the premises, no definite conclusion follows. However, I and II involve only the extreme terms and form a complementary pair. Thus, either I or II follows.
Correct Answer: Only conclusion II follows
Explanation:
Since the middle term 'tall' is not distributed even once in the premises, no definite conclusion follows. However, II is the converse of the second premise and so it holds.
Comments
There are no comments.More in Logical Reasoning:
Programming
Copyright ©CuriousTab. All rights reserved.