
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 class has a total of 60 students, with seat numbers ranging from 01 to 60. Using systematic sampling, a sample of 4 students is drawn based on their seat numbers. It is known that students with seat numbers 03, 18, and 48 are in the sample. Determine the seat number of the other student in the sample.

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