
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 certain city, 30% of families subscribe to Newspaper A, 60% of families subscribe to Newspaper B, and 20% of families subscribe to both Newspaper A and B. Four families are randomly selected from this city.  
(Ⅰ) Find the probability that exactly 3 of these families subscribe to Newspaper A;  
(Ⅱ) Find the probability that at most 3 of these families subscribe to Newspaper B;  
(Ⅲ) Find the probability that exactly 2 of these families do not subscribe to either Newspaper A or B.

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