#### Answer

$\frac{1}{175,711,536}$

#### Work Step by Step

Because the order is not important, we can use the combination rule to determine the number of possibilities: $\frac{56!}{(56-5)!5!}=3,819,816$.
By using the fundamental counting rule we can get the number of possibilities: $3,819,816\times46=175,711,536$. We also know that $probability=\frac{number \ of \ good \ outcomes}{number\ of\ all\ outcomes}$, therefore $P=\frac{1}{175,711,536}$.