I did not understand it

Answer:
1 / 36
Step-by-step explanation:
So there's one number on a cube greater than 5. That is 6.
There is 1 / 6 chance of getting 6 the first time, and another 1 / 6 change for getting 6 the second time.
1 / 6 * 1 / 6 = 1 / 36