The number of element sample space for the experiment is n(T) = 8.
Determine the probability for the number 5.

The possible number greater than 3 are 4, 5, 6, 7, and 8. So number of possible outcome for greater than 3 are 5.
Determine the probaility for the number greater than 3.

Both events are independent. So probability for number 5, and greater than 3 is,

Answer: 5/64