
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
The school offers six subjects: Physics, Chemistry, Biology, Politics, History, and Geography. Xiao Ming plans to apply for a certain major in a university that requires Physics to be chosen, and any other two subjects can be selected freely. How many different subject selection methods does Xiao Ming have? (Answer in numerical form).

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