Question 386491
First, let's compute the probability that after four rolls, all numbers are less than or equal to four. After that, we can subtract from 1 since the rest of the cases involve a number being greater than 4 at least once.


The probability that no number exceeds 4 is


{{{(2/3)^4 = 16/81}}}


1 - (16/81) = 65/81, which is the final probability.