
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
We call the "last digit of a number" the digit that is most to the right. For example, the last digit of 2014 is the digit 4.

a) What is the last digit of \(11^{11}\)?

b) What is the last digit of \(9^{9}\)? And what is the last digit of \(9219^{9219}\)?

c) What is the last digit of \(2014^{2014}\)?

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