Logic training

A warehouse thefts

Four custodian statements as follows:

A: The four of us did not commit a crime;

B: We have someone commit a crime;

C: B and D did not have at least one crime;

MARTIN: I do not commit crimes

 

If: There are two telling the truth; there are men said was false; it is set up to determine which of the following?

A: tell the truth is that A and D

B: if the truth is that B and C

C: tell the truth is that B and D

D: tell the truth is that B and D

Logical contradiction

Conditions opposition and B, there must be a fake
Bingding then there must be a person to tell the truth;

Ding assume tell the truth, propylene telling lies.
    Inferred: D is true, malonic is also true. The condition is not satisfied.
    Results: Ding said was lies, propane is the truth. Then A is false
    Answer: B

A warehouse theft reasoning

 Contradictory conditions of use, to distinguish between true and false

Note: Two different determination, there must be a true, a false

A law firm a total of 12 staff members:

(1) someone will use your computer

(2) Some people do not use computers

(3) the director does not use a computer

 

The three judges, only one is true.

The following () correctly represents the number of the firm will use the computer.

A: 12 people will use

B: 12 ​​people no one will use

C: do not use only one

D: only one person can use

1 A  

answer

Beautiful shoes

　　Beauty buy a pair of shoes

Peter said: you buy shoes will not be blue;

Alice said: It is not red is black;

Helen said: you buy shoes must be black;

 

If at least one person says is correct, one person said was wrong. Why buy the beautiful shoes color?

Assumptions blue shoes
    Three people are saying wrong, apparently not
Assume black shoes
    Three people are saying right, apparently not
If the shoe is red
    Both statements are true, one wrong statement.
    Meet the requirements of the meaning of problems

Beautiful pair of shoes heap management

 

Wu school

Wu, Song Jiang, Li Kui three were admitted to Peking University, Tsinghua University, Renmin University, but did not know whether they were admitted which each university, and a few people made the following guess:

A: Wu was admitted to Tsinghua University, Renmin University of Li Kui was admitted

B: Wu is admitted to Renmin University, Song Jiang was admitted Tsinghua University

C: Wu was admitted to Beijing University, Tsinghua University, Li Kui was admitted

 

The expression of the three men, each person only got it half right.

So Wu Song, Song Jiang and Li Kui were admitted to it which university?

A, Wu, Song Jiang, Li Kui are Peking University, Tsinghua University, Renmin University admissions

B, Wu, Song Jiang, Li Kui are Peking University, Renmin University, Tsinghua admission

C, Wu, Song Jiang, Li Kui were admitted to Tsinghua University, Peking University, Renmin University

Answer: A

Hypothesis
    Li Kui: admitted to Renmin University
    A stars based on options
        Wu: not admitted Tsinghua University, was admitted to Beijing University
        Song Jiang: to be admitted to Tsinghua University
    The results: ABC are in line with the meaning of problems

Pinewood school