
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 player marked a total of ten different numbers on two tickets in a lottery where five numbers are drawn. Four of these numbers were drawn. What is the probability that the player has

a) a match of four numbers?

b) a match of two numbers?

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