
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]


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Class $A$ and class $B$ have a total of $100$ students. A stratified random sampling method is used to select a sample of $10$ students for a survey. If the sample contains $4$ students from class $A$, then the number of students in class $B$ is ______.

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