
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
Among the following 3 events: ① Adding two numbers with opposite signs, the sum is negative; ② Multiplying two numbers with opposite signs, the product is positive; ③ Dividing two numbers with opposite signs, the quotient is negative. Among these 3 events, the random event is ____. (Fill in the serial number)

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