
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
Using systematic sampling, 48 students from Class 9 of Senior One, with numbers from 1 to 48, are selected to form a sample group of 4 students. If students numbered 5, 29, and 41 are included in the sample, then the number of the fourth student in the sample is ______.

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