Probability

Question

Bob has a peculiar pair of four-sided dice.    When he rolls the dice, the probability of any particular outcome is proportional to the sum of the results of each die. All outcomes that result in a particular sum are equally likely.
(a) What is the probability of the sum being even? (b) What is the probability of Bob rolling a 2 and a 3, in any order?

Here what do we mean by the line -----” any particular outcome is proportional to the sum of the results of each die.”

Answer 1

a  1/2

b  1/16