In the row of Pascal's triangle that starts 1, 11, what is the ninth number?
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<|im_start|>user
In the row of Pascal's triangle that starts 1, 11, what is the ninth number?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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In the row of Pascal's triangle that starts 1, 11, what is the ninth number?
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