
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
Let \( M_n \) be the set of \( n \)-digit pure decimals in decimal notation \( 0.\overline{a_1a_2\cdots a_n} \), where \( a_i \) can only take the values 0 or 1 for \( i=1,2,\cdots,n-1 \), and \( a_n = 1 \). Let \( T_n \) be the number of elements in \( M_n \), and \( S_n \) be the sum of all elements in \( M_n \). Find \( \lim_{n \rightarrow \infty} \frac{S_n}{T_n} \).

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