Well, if you do roll a $3$, then there would be a $1\over 6$ chance of rolling another $3$.  So, for the next two rolls after rolling just once, if you roll two more times, then there will be a $1\over 36$ chance of rolling two $3$s.  Here's a thing to help: Rolls to Get the Number | Chance the Number Will Appear Again Those Rolls$$2|{1\over6}$$$$3|{1\over 36}$$$$4|{1\over 216}$$$$5|{1\over1,296}$$

So, after one roll, the chance starts at the second roll and then multiplies by $1\over 6$ from the beginning as you go.  This works for any number on a six-sided die.

Continuous Dice rolls
What is the correct adjective form of the word hire? I have seen references to both hireable and hirable. 

I checked using Google's Ngram viewer book search and it appears that both have been in use since the 1800s with hirable becoming a bit more popular in the past decade or so:


