SYLLOLOGISM SHORT CUTS FOR REASONING ABILITY

Posted by IBPS  |  at  16:38

SYLLOLOGISM SHORT CUTS FOR REASONING ABILITY 

Step 1: How to align 

1) Changing the order of statement (Up & Down).
2) Converting anyone statement through It IEA" rule.
A -I, E-E, I-I, 0 - Not Converted (SUBJECT as PREDICATE, PREDICATE as SUBJECT).
COMBINATION: only six types combination's possible . Other combination has no conclusion
1)A+A=A
2)A+E=E
3)A+I=no conclusion
4)E+A=O*
5)E+I =O*
6)I +E=O
7)I +A=I

explanations :1)A+A=A
All M are N (A type)
All N are P (A type)
We can combine this two types only if predicate of first sentence :N and subject of second sentence :N are same .in other words the same words must come diagonally. conclusion is .
All M are P
2) A+E=E
All M are N(A type)
No N are P(E type)
conclusion :No M are P
3) A+I = no conclusion
4) I +I = no conclusion
5)I +E=O
Some M are N ( I type)
No N are P (E type)
conclusion : Some M are not P ( O type)
6) I +A = I
Some M are N ( I type)
All N are P (A type )
conclusion :Some M are P (I type)
7) E +A =O*
No M are N (E type )
All N are P (A type)
conclusion: Some P are not M ( O* type)
Note: In O* we use some not but the subject is the predicate of 2nd sentence
8)E +I =O*
No M are N (E type)
Some N are P(I type)
conclusion: Some P are not M (O* type)
Rest combination are not possible E + E = No conclusion
Complementary pair: If the options given in conclusion part is not our conclusion then we check for complementary. There are mainly three pairs coming under complementary pair. They are
1)A-O
2)I-O
3)I-E
But the condition is subject and predicate of both the sentences should be same.
1)A-O pair: All M are N (A type)
Some M are not N (O type)
2)I-O pair : Some M are N (I type)
Some m are not N (O type)
3)I-E pair: Some M are N (I type)
No M are N (E type)

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