
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 the arithmetic sequence $\{a_n\}$, we have $a_2=4$, and $a_4+a_7=15$.  
(Ⅰ) Find the general term formula for the sequence $\{a_n\}$.  
(Ⅱ) Let $b_n= \frac{1}{a_n a_{n+1}}$, calculate the value of $b_1+b_2+b_3+\dots+b_{10}$.

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