Step-by-step explanation:
Assuming two 6 sided fair dice marked 1 thru 6 each
If you roll any number from 1 to 4 on one die, there is a single number 5-n you can roll on the second die, to get a five.
Your chance of rolling a 1 thru 4 on a d6 is 4/6
Your chance of rolling a given number on a d6 is 1/6
Thus, 4/6*1/6=4/36, or 1/9
Eight times out of nine you’re going to roll something other than a five.