
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 regulation in Chongqing stipulates that to obtain a driver's license, a driver must sequentially pass three examinations: subject 1, subject 2, and subject 3. If a candidate fails any subject, they are not allowed to attempt the subsequent subjects and their application is considered unsuccessful. It is known that the probabilities of an individual passing subject 1, subject 2, and subject 3 are 0.9, 0.7, and 0.6, respectively.
1. Calculate the probability that this person successfully obtains a driver's license.
2. Let the random variable $\xi$ represent the number of attempts this person makes during the application process for a driver's license. Determine the expected value of $\xi$.

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