
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
It is necessary to find out a five-digit phone number by asking questions that can be answered with "yes" or "no". What is the smallest number of questions needed to guarantee this (assuming that the answers to the questions are correct)?

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