Math 149A HW 2
Solutions
1. For each of the following functions, determine whether or not it is an actual probability
function. In particular, you should either explain why all three of the properties in the
definition are true (i.e. explain why its a pro

Math 149A HW 3
1. Part a: Suppose that I roll a fair die (meaning that each number from 1 to 6 is equally
likely) until I get a 6. What is the probability (in terms of k) that the first 6 appears the
k th time I roll the die?
Part b: Suppose Alice and Bob