## Algebra and Trigonometry 10th Edition

$\frac{1}{120}$
We know that $probability=\frac{\text{number of favourable outcomes}}{\text{number of all outcomes}}$ The number of all outcomes is $5!=120$ (same as $_5P_5$ because we place $5$ digits to $5$ places and the order matters) There is $1$ "good outcome." Hence the probability here is: $\frac{1}{120}$