Answer
$\frac{25}{36}$
Work Step by Step
The events are independent.
The cubes have 5 outcomes that are less than 6:
P(blue less than 6)=$\frac{5}{6}$
P(green less than 6)=$\frac{5}{6}$
P(blue less than 6 and green less than 6)=P(blue less than 6) $\times$ P(green less than 6)
P(blue less than 6 and green less than 6)=$\frac{5}{6}$ $\times$ $\frac{5}{6}$
P(blue less than 6 and green less than 6)=$\frac{25}{36}$
