
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
Given the frequency of the teacher's age being less than 30 years old is 0.3 and the frequency of the teacher's age being between 30 and 50 years old (exclusive) is 0.5, determine the frequency of the teacher's age being not less than 50 years old.

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