
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
1. If $A_{10}^{m} =10×9×…×5$, then $m=$ ______.
2. The number of ways for A, B, C, and D to take turns reading the same book, with A reading first, is ______.
3. If five boys and two girls are to be arranged in a row for a photo, with boy A required to stand in the middle and the two girls required to stand next to each other, the total number of arrangements that meet these conditions is ______.

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