
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 teacher from a certain school is going to participate in the national high-quality math lesson competition. It is known that the probabilities of him going directly by train, ship, car, and airplane are 0.3, 0.1, 0.2, and 0.4, respectively.  
(Ⅰ) Calculate the probability of him going by train or airplane;  
(Ⅱ) The probability of him not going by ship.

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