
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 with 30 classes conducted a survey to understand the psychological state of its students. Each class was assigned a number from 1 to 30. Using systematic sampling, 5 classes were selected for the survey. If the sum of the numbers of the selected classes is 75, what is the smallest number among the selected classes?

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