jezeli-a-jest-zdarzeniem-losowym-oraz-a-jest-zdarzeniem-przeciwnym

$\displaystyle \frac{4}{5}$\displaystyle \frac{4}{5}

$\displaystyle \frac{1}{5}$\displaystyle \frac{1}{5}

$\displaystyle \frac{1}{6}$\displaystyle \frac{1}{6}

$\displaystyle \frac{5}{6}$\displaystyle \frac{5}{6}