The Coefficient of x 9in x -21 C 0 x -21 C 1 x -21 C 2 - - - x -21 C 10 isA- 240-142-2 C20- 239-142-2 C21- 240-42 C 20D- 239-142-4 C21

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Ratio and Proportion

The Coefficie...

Question

The Coefficient of $x^{9} i n (x -^{21} C_{0}) (x -^{21} C_{1}) (x -^{21} C_{2}) . . . . . . (x -^{21} C_{10})$ is

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Y - axis

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