This year, our county participated in the physical and chemical experiment operation examination, and the students drew lots to decide their own examination contents. It is stipulated that each candid

This year, our county participated in the physical and chemical experiment operation examination, and the students drew lots to decide their own examination contents. It is stipulated that each candidate must be in four physical facts.

The question 1: method 1: is listed as follows:

E

F

G

H

A

(A, E)

(A, Fu)

(A, G)

(A and B)

B

(B，E)

(B，F)

(B，G)

(B，H)

C

(Chinese and English)

(C, F)

(C, G)

(C, C)

D

(D，E)

(D，F)

(D, G)

(D，H)

........................ scored six points.

Method 2: Draw a tree diagram as follows:

All possible outcomes? AE？ AF？ AG？ AHBE？ BF？ BG？ Chengbo

CE？ CF？ CG？ CHDE？ DF？ DG？ DH..................6 scored 6 points.

Question 2: From the table or tree diagram, it can be seen that there are 16 possible outcomes * *, in which event M occurs once, so P(M)=? .................... 10 point

According to the meaning of the question, analyze all equally possible results by list method or tree drawing method, and then calculate the probability of the event according to the probability formula.