
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 subscriber forgot the last digit of a phone number and therefore dials it randomly. Determine the probability that the subscriber will have to call no more than three times to get the correct connection.

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