
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 2012, a telecommunications company launched a series of mobile phone numbers. The first seven digits of the card number are fixed, and the last four digits range from "0000" to "9999", totaling 10,000 numbers. The company stipulates that if the last four digits of the card number are arranged in ascending order from smallest to largest, it is called a "Auspicious Dragon Card" and enjoys certain preferential policies. The number of "Auspicious Dragon Cards" in this series is ____.

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