
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 110th anniversary celebration of Guiyang No.1 High School was held on campus on September 30th, 2016. During the celebration, 2 volunteers from the freshman class and 4 volunteers from the sophomore class were randomly selected to provide reception services for alumni at Gate 1. The probability that at least one of the selected volunteers is from the freshman class is ______.

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