
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
Mogao Grottoes is located in Dunhuang, Gansu. It is the largest and most abundant Buddhist art site in the world, attracting tourists from all over the world to visit every year. It is known that purchasing a normal ticket for Mogao Grottoes allows visitors to see 8 open caves. Among these 8 caves, Cave 96 of the 9th floor, Cave 16 of the 3rd floor, and Cave 17 of the scripture cave are considered the most worth visiting caves. Due to the needs of epidemic prevention and control, Mogao Grottoes has switched to a rapid visit mode. Visitors need to randomly select 4 caves from the open caves included in the ticket for visit. The probability of including at least 2 of the most worth visiting caves in the selection is ____.

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