
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) In Mexico City, there are regulations that restrict private cars from driving on city streets on two specified days of the week. A family needs to have at least ten cars available every day. What is the minimum number of cars the family needs if they can choose the restricted days for their cars?

b) In Mexico City, each private car is restricted from driving on city streets on one specified day of the week. A wealthy family of ten people has bribed the police, allowing them to suggest two days, from which the police choose one as the restricted day. What is the minimum number of cars the family needs to buy to ensure that each family member can drive every day, given that the assignment of restricted days is done sequentially?

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