
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
In the Shanghai college entrance examination reform plan, every high school student is required to choose 3 subjects from the following 6 subjects for level examination: the science subjects include Physics, Chemistry, and Biology, and the humanities subjects include Politics, History, and Geography. If student Xiao Wang prefers science subjects and decides to choose at least two science subjects, then the number of possible subject combinations for Xiao Wang is _______.

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