In
banking exams Syllogism questions can be asked in itself. Usually 5-6
questions can be asked from this topic, thus it can fetch you easy marks
with right practice.
Introduction:- The word ‘Syllogism’ is also referred to ‘Logic’. Syllogism is an important section of logical reasoning and hence, a working knowledge of its rules is required to solve the problems. In banking and IBPS exams they ask 5 questions on this hence it is an important topic for banking exams.
These questions are usually of the following nature:
Two or more statements are given and one is supposed to find out all the possible conclusions from the given statements.
Syllogism is an important topic of logical reasoning. Generally a set of 5-6 questions asked in the competitive examination this type of question can be solved using VENN-diagram.
Note:- 1. Consider statements are always truth that is statement are universal truth. This is main concept of syllogism.
2. You must understand their statement and after that, considered on their conclusion.
Statement Type
Type 1
|
All Books are pen
|
Type 2
|
No Book is pen
|
Type 3
|
Some Book are pen
|
Type 4
|
Some Book are not pen
|
Conclusion Type
Type 1
|
All Books are pen
|
Type 2
|
No Books are pen
|
Type 3
|
Some Books are pen
|
Type 4
|
Some Books are not pen
|
Type 5
|
All Books are pen is a
possibilities
|
Type 6
|
All Books are not pen is a
possibilities
|
Type 7
|
At least some books are pen
|
Three parts of syllogism:- (I) Positive (100%)
(II) Negative (0%)
(III) Possibly [(50-50%) (May be or not)]
Positive parts (100%)
Example:- All and some
Statement:- All Books are pen
All pens are copy
Conclusion:-
All book are copy – √
All pen are copy – √
Some book are pen – √
Some pen are book – √
Some copy are pen – √
Some Book are copy – √
All pen are book – X
All copy are pen – X
All copy are book – X
II. Negative parts (0%)
Example :- No Book is pen
Statement : - All books are pen
No pen is copy
Conclusion:- No book is copy
No copy is pen
Note:- If I relate book and copy then my statement does not fallows and always consider or work on universal truth of syllogism
III. Possibly parts (50-50%)
Example:- Some Mango are apple is a possibilities
Statement:- All apple are mango
Some mango are orange
Conclusion:- It is possible that all mango are apple – √
It is possible that some orange are not apple – √
It is possible that all apple are mango – X
It is possible that some orange are apple – √
Note:- If direct relation are not given then anything can be possible, but at the any cost my statement will not wrong.
* COMPLEMENTARY PAIR : (Either Based)
(a) No boy are student
(b) Some boy are students
Note:- Some not statement (Opposite to all)
Statement:- Some apple are orange
No orange are mango
Conclusion:- Some apple are not mango – X
Some mango is not orange – √
Some mango is not apple – √
Note:- We cannot prove that all apple are mango. Because in the
statement it is clearly mention that there is no relation between orange
and mango.
The theory above may be summarised as:
SL. No. If the type of the given proposition is
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