
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
A junior high school basketball team has 8 basketballs, consisting of 4 new, unused balls and 4 old, used balls. The balls are randomly selected 2 at a time for each training session. Calculate the probability that exactly 1 new ball is selected in the second training session.

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