If 21 students write their names on pieces of paper and put them in a hat, what is the probability that the first student who draws will draw his own
name?

1/21

Step-by-step explanation:

There are 21 total slips of paper.

Only one has the persons name on it.

1/21 is the probability he chooses his name

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x