
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
To understand the incidence rate of myopia among high school students in a certain school, a stratified sampling survey was conducted among the students of the school. It is known that there are 800 students in the first year, 600 students in the second year, and 500 students in the third year. If 25 students from the third year are sampled, then the probability of each first-year student being selected is ______.

Present the answer in LaTex format: \boxed{Your answer}
user