Mba-day19 if P then q contradictory relation P and not Q

exercises

If p be q
-> If the q, Then not p
-> Not p or q
-> Contradictory relationship ：p And not q

exercises 1

Dad said to Xiao Ming ： If the final exam math does not exceed 95 branch , There is no reward . Which of the following is true , Explain that what Dad said is false ？
I Xiao Ming's math score in the final exam 96 branch , But didn't get a reward
II Xiao Ming's final math score 92 branch , But get a reward
III Xiao Ming's final math score 92 branch , No reward

A only I
B only II
C only III
D only I and II
E I、II、III

answer ：B

 Examine contradictory relationships ：
 If Xiao Ming doesn't pass the final exam in Mathematics  95  branch , There is no reward 

 Corresponding contradictory relationship 
 If Xiao Ming doesn't pass the final exam in Mathematics  95  branch , Get a reward