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Title : Reasoning Ability Syllogism Solved Set - 1
Published By : jeeva
Posted on: 25 - October - 2012
Edited on: 25 - October - 2012
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In syllogism we have four types of premises,

 

Type

Model

Value

Universal Positive

All XXX are YYY

0

Universal Negative

No XXX is YYY

1

Particular Positive

Some XXX are YYY

2

Particular Negative

Some XXX are not YYY

3

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Rules

0 + 0 =   0                               2 + 0 =   2

0 + 1 =   1                               2 + 1 =   3

1 + 0 = - 3                               1 + 2 = - 3

 

Example Question

All men are mortal.

All Greeks are men.

 

Answer

First we want to arrange in a sequence like below (last word of first line and first word of second line as same)

All Greeks are men.

All men are mortal.

 

Then give value to the premises

All Greeks are men.        =>           0

All men are mortal.         =>           0

Apply Rules

0 + 0 = 0                =>            All XXX are YYY

 

All Greeks are men.        =>           0              (XXX)

All men are mortal.         =>           0              (YYY)

 

 

                                        = >                All Greeks are mortal

 

So answer is All Greeks are mortal

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