
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
A youth volleyball team has 12 team members, and their ages are as shown in the table below:

| Age (years) | 18 | 19 | 20 | 21 | 22 |
|-------------|----|----|----|----|----|
| Number of people | 3 | 5 | 2 | 1 | 1 |

The median age of these 12 team members is ______ years.

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