
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
A high school's grade 12 students have completed and submitted 54 papers in social sciences, 60 in humanities, and 39 in other categories. To understand the quality of the students' papers, 51 papers are selected for review using stratified sampling from all completed and submitted papers. The number of social science papers selected is \_\_\_\_\_\_.

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