A die is loaded so that the probability a given number turns up is proportional to that

Question:

A die is loaded so that the probability a given number turns up is proportional to that number. So, for example, the outcome 4 is twice as likely as the outcome 2, and the outcome 3 is three times as likely as that of 1. If this die is rolled, what is the probability the outcome is
(a) 5 or 6.
(b) even.
(c) odd?