Tricks to Solve Reverse Syllogism for Upcoming IBPS PO Exam

June 6, 2017    

Syllogism is a game played with circles logically. Usually statements will be given and we have to find the appropriate conclusion which follows the statements. In Reverse Syllogism, as the name suggest, Conclusions will be given and we have to find the appropriate statements which satisfies the conclusions. 

It may seems like a lengthy process, But if you are strong in basic concepts of syllogism along with some elimination tricks, you can master this topic.
Let us brush up some basic concepts of syllogism with some examples.

Example.1

Statement: All A are B

Possible Conclusions:

1. Some A are B
2. Some B are A
3. Some B are not A

Example. 2

Statement: Some B is C 


Possible Conclusions:

1. Some C is B
2. Some B is not C
3. Some C is not B
4. All B are C is Possible/ All B may be C
5. All C are B is Possible

Note: Some B are C is Possible cannot be a conclusion
May be/ Can be means Possibility
At least some means Some
Very few means Some

Example. 3

Statement: No C is D 


Possible Conclusions:

1. No D is C
2. Some C are not D
3. Some D are not C
4. All C can never be D
5. All D can never be C
Now let us combine all the statements of the above three examples.

Example. 4

Statement: 
All A are B 
Some B is C
No C is D

Possible Conclusions:

1. No D is C
2. Some C are not D
3. Some D are not C
4. Some A are not D
5. Some B are not D
6. All A are C is Possible
7. No A is D is Possible
8. No B is D is Possible
9. Some A are D is Possible
10. Some B are D is Possible
11. All B can never be D
12. All A can never be D
13. Some A are D (or) No A is D
14. Some B are D (or) No B is D

Now Let us discuss the elimination tricks to solve Reverse Syllogism with some examples:


Example.1

Conclusions: 
I. All A can never be B
II. Any A which is a D is also C

Statements: 

A. Some A is B. All B is C. Some C is D
B. Some A are D. All A are C. No B is D
C. No A is C. All C are B. Some C is D
D. All A are C. Some C are D. No D is B
E. None of these

Answer: Option B


Explanation:

  • First let us take a quick scan on the statements 
  • Take Option A and compare it with conclusion I,  All A can never be B. Some A is B. All B is C. Some C is D (Option A is eliminated) 
  • Take Option C and compare it with conclusion II  Any A which is a D is also C No A is C. All C are B. Some C is D (Option C is eliminated) 
  • Now we have Option B and D 
  • Take Option B and compare with both the conclusions. 
Some A are D. All A are C. No B is D

  • From the Shaded region it is clear that All A can never be B and Any A which is D is also C. (Both conclusions Follows, so Option B is the answer) 
  • In Exam You can stop once you find the answer. 
  • But, Now let us take Option D also and check. 

All A are C. Some C are D. No D is B


  • Here All A can never be B may or may not be true 
  • Therefore, option D doesn’t follow. 

Example. 2

Conclusions: 
I. Atleast Some A may be C. 
II. All C being B is a Possibility.

Statements: 

A. Some A are B. Some B are C. All C are D. No A is D.
B. All A are B. No C is B. Some A is D
C. No C is A .All A are D. Some D is B
D. All A Are B. Some A are D. No D is C
E. None of these

Answer: Option D

Explanation:

  • First let us take a quick scan on the statements 
  • Take Option B and compare it with conclusion II,  All C being B is a Possibility.  All A are B. No C is B. Some A is D (Option B is Eliminated) 
  • Take Option C and Compare it with Conclusion I Atleast Some A may be C. No C is A. All A are D. Some D is B (Option C is eliminated) 
  • Now we have Option A and D 
  • Take Option A and Compare with both the conclusions 
Some A are B. Some B are C. All C are D. No A is D.

  • Here conclusion I don’t follow 
  • Now Let us take Option D and Compare with both the conclusions 
All A Are B. Some A are D .No D is C


  • Both the Conclusions Follow. To understand the concept more easily, above diagram can be redrawn as. 
RBI Grade B Online Classes by Ramandeep Singh - Join here
notifications

Oliveboard Test Series(Recommended)


Bank Exams Today Notes

Join 40,000+ readers and get free notes in your email

Let's block ads! (Why?)



- http://www.bankexamstoday.com/2017/06/tricks-to-solve-reverse-syllogism-for.html
Tricks to Solve Reverse Syllogism for Upcoming IBPS PO Exam 4.5 5 Yateendra sahu June 6, 2017 Syllogism is a game played with circles logically. Usually statements will be given and we have to find the appropriate conclusion which f...


Related Post:

  • Awards and Honours 2019 - PDF
    April 2019 Name Category Organized/ Presented by PM Narendra Modi Russian Award “Order of Saint Andrew The Apostle” Russia Dr Babasaheb Ambedkar Nobel International Human Rights Council Award Sunny Shah(Founder of internationa… Read More
  • Daily Report: 3rd May 2019
    Videos Uploaded Videos Section Different Models and Types of Economies ESI: Static Economics 2019 Notes Uploaded Videos Section NABARD Grade A GK Digest: May 2019  - PDF NABARD Grade A GK Digest 2019 List of Appointments: April 2… Read More
  • Recently Appointed Brand Ambassadors List
    2018-19 Name of the Brands & Campaigns Person PhonePe Aamir Khan Fantasy 11 Murali Kartik redBus Mahendra Singh Dhoni Indo-American Arts Council (IAAC) Vikas Khanna   Fast&Up  Mayank Aggarwal PolicyX.com&nbs… Read More
  • Monthly Current Affairs GK Digest: April 2019
    Dear learners We are publishing the Monthly GK Digest for the Month of April 2019, which Includes articles on important current affairs along with the important government schemes and awards and honours. The digest is helpful for upcoming SBI PO a… Read More
  • Puzzle Questions for SBI Clerk 2019 - Part 2
    Study the following information carefully and answer the questions given below : Six friends- Hetal, Jayshree, Rohini, Meena, Nidhi and Swati, stay in different areas of a city i.e. Dadar, Matunga, Mulund, Vikhroli, Thane and Kanjurmarg but not nece… Read More
Load comments

No comments:

Post a Comment