
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 a pouch, there are 2 white balls and 2 black balls that are identical except for color. If two balls are randomly selected at the same time, what is the probability of drawing at least one black ball?

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