#### Answer

$\frac{1}{4}$

#### Work Step by Step

The events are independent.
A number cube has 3 even sides (2,4,6):
P(even)=$\frac{3}{6}$=$\frac{1}{2}$
A number cube has 3 odd sides (1,3,5)
P(odd)=$\frac{3}{6}$=$\frac{1}{2}$
P(odd then even)=P(even) $\times$ P(odd)
P(odd then even)=$\frac{1}{2}$ $\times$ $\frac{1}{2}$
P(odd then even)=$\frac{1}{4}$