IMathAS-libretexts

Which of the following cannot be the probablity of an event?

$\displaystyle {1.00}$
$\displaystyle {0.4}$
$\displaystyle {0.00}$
$\displaystyle \frac{{9}}{{5}}$
$\displaystyle -\frac{{5}}{{9}}$
$\displaystyle \frac{{5}}{{9}}$
$\displaystyle {1.41}$
$\displaystyle -{0.1}$