You can put this solution on YOUR website! There are 6 possible outcomes for each die, so the total number of outcomes for three dice (in which order matters) is 6*6*6=216.
There is only one way to get a sum of 3: 1 on each of the three dice.
So the probability of getting a sum of 3 is 1/216.
You can put this solution on YOUR website!
There are 6^3 = 6*6*6 = 36*6 = 216 ways to have three dice land. Only one of those ways is where we have three copies of 1 land face up, so 1+1+1 = 3 as the total sum.