
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
One of the international standard indicators for volleyball is the quality of the volleyball, with the standard quality of the volleyball specified as $270\pm 10g$. Given the quality of $8$ volleyballs with masses $275\,g$, $263\,g$, $278\,g$, $270\,g$, $261\,g$, $277\,g$, $282\,g$, and $269\,g$, determine the number of volleyballs that do not meet the quality requirements.

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