
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
Every year on April 23rd is "World Book Day". In order to understand the awareness of "World Book Day" among 350 eighth-grade students in a certain school, 50 students were randomly selected for a survey. The sample size of this survey is ______.

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