posted by Sam .
Two cubes are rolled .both cubes are labelled 1 to 6.the number rolled are added.
What is the probability of each out come ?
a) sum is 12
B)the sum is less than 4.
C)the sum is 7.
D)the sum is 2.
Simply make a list of possibilities for each of your outcomes
I will do C)
To get a sum of 7 we could have:
16 25 34 43 52 or 61 for a totol of 6 cases
so prob(sum of 7) = 6/36 = 1/6
do the others the same way.