
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 set $A=\{1,2,3,\ldots,10\}$. For each subset of $A$ containing three elements, if the sum of the three elements in each subset is denoted as $a_1, a_2, a_3, \ldots, a_n$, then the sum $a_1+a_2+a_3+\ldots+a_n=$ ?

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