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The number of ways of dividing 100 scouts into 3 squads of 50, 30, 20 respectively is

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_{$\frac{80!}{60! 50! 40!}$}

_{$\frac{90!}{50! 40! 30!}$}

_{$\frac{100!}{50! 30! 20!}$}

_{$\frac{120!}{70! 50! 20!}$}

answer is C.

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Answer_{$= \frac{100!}{(50)! (30)! (20)!}$}

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