1- ((19999^n)/(20000^n))(sum ((100n!)/(j!*(100n-j)!*19999^j)), j=0 to 79); n = 14400001- ((19999^n)/(20000^n))(sum ((100n!)/(j!*(100n-j)!*19999^j)), j=0 to 79); n = 1440000

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