
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
Fiona is observing a group of twelve college students this time. She wants to guess whether any pair of students from the group know each other. How many different pairs of students can Fiona observe before she runs out of pairs to evaluate?

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