
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 following statements:
① For a sector with a central angle of 120° and a radius of 2, the arc length of the sector is $$\frac {4π}{3}$$;
② A small auditorium has 25 rows of seats, with 20 seats per row. During a psychology lecture, the auditorium was filled with students. After the lecture, to understand the situation better, 25 students with seat number 15 from all rows were kept for a test. This method used here is systematic sampling;
③ When a person shoots at a target twice consecutively, the event "hitting the target at least once" and the event "missing the target both times" are complementary events;
④ If 0＜x＜ $$\frac {π}{2}$$, then tanx＞x＞sinx;
⑤ If the variance of the data x<sub>1</sub>, x<sub>2</sub>, …, x<sub>n</sub> is 8, the variance of the data 2x<sub>1</sub>+1, 2x<sub>2</sub>+1, …, 2x<sub>n</sub>+1 is 16.
The correct statement numbers are \_\_\_\_\_\_ . (Fill in the numbers of the statements you think are correct)

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