Mba-day18 elimination method

exercises

Example 1

If Professor Zhang devotes himself to the teaching of management knowledge , So he becomes a management expert . If he does not devote himself to the teaching of knowledge , Then he can become an entrepreneur . Unless he becomes a management expert , Otherwise, you can't be an entrepreneur .
From this we can deduce Professor Zhang ：

A Not devoted to the teaching of management knowledge
B Become an entrepreneur
C Can't be a management expert
D Become a management expert
E Can't be an entrepreneur

answer ：D

 All the questions are translated into   perhaps   The relationship between 
 If Professor Zhang devotes himself to the teaching of management knowledge , So he becomes a management expert 
->  Zhang Bu becomes a management expert , They are not devoted to the teaching of management knowledge 
->  Zhang becomes a management expert   or   Zhang is not committed to the teaching of management knowledge 

 If he does not devote himself to the teaching of knowledge , Then he can become an entrepreneur 
->  If Zhang doesn't become an entrepreneur , Is devoted to the teaching of management knowledge 
->  Zhang becomes an entrepreneur   or   Zhang devoted himself to the teaching of management knowledge 

 Unless he becomes a management expert , Otherwise, you can't be an entrepreneur .
->  Zhang Bu becomes a management expert ,  Zhang cannot become an entrepreneur 
->  Zhang becomes a management expert , Or Zhang can't be an entrepreneur 

 Eliminate contradictions , Below 【】()  It belongs to a contradictory relationship , be -> Zhang becomes a management expert 

 Zhang becomes a management expert   or  ( Zhang is not committed to the teaching of management knowledge )
【 Zhang becomes an entrepreneur 】  or  ( Zhang devoted himself to the teaching of management knowledge )
 Zhang becomes a management expert , or 【 Zhang can't be an entrepreneur 】