
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 civil servant is going to a meeting, and the probabilities of him taking a train, a ship, a car, or a plane are 0.3, 0.2, 0.1, and 0.4, respectively.  
(1) Calculate the probability of him taking a train or a plane to the meeting;  
(2) Calculate the probability of him not taking a ship to the meeting.

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