0, 1, 5, 0, 8, 0, 3, 2, 0, 1
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Calculate the number of ways in which 20 balls can be distributed in the arrangement 0, 1, 5, 0, 8, 0, 3, 2, 0, 1.
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So the book says the answer was 4.19 10^10. Which I am not under
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