How do you find the probability of getting a sum of 5 on the first toss of two number cubes and?
I'm going to assume we're using fair standard cube dice.
There are 2 dice, each with numbers 1-6. So there are 36 different possible combinations.
So how can we get a sum of 5? We can get it with:
with the first number being the first die and the second the second.
There are 4 ways to get a 5.
The probability, therefore, is: