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A lottery sells n^(2) tickets and declares n prizes. If a man purchases n tickets, the probability of his winning exactly one prize is …… |
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Answer» `1-(.^(N^(2)-n)C_(n))/(.^(n^(2))C_(n))` `f'(x)=0" at "x=(piL)/(pi+4)."Check "f(0),f(L),f((piL)/(pi+4))` |
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