Find the probability of each event when a die is rolled once

Find the probability of each event when a die is roll once:

Find the probability of getting a head when a coin is tossed once. Also find the probability of getting a tail.

Find the probability of getting a prime number when a die is rolled

Find the probability of getting sum 7 when two dice are rolled

A die is loaded so that the probability of a face i is proportional to i where i=1,2,3,4,5,6 . The probability of an even number occuring when die is rolled is

Probability of getting 7, when a dice is rolled, is……………

A die is formed so that the probability of getting a number i when it is rolled is proportional to i. (i=1,2,3,4,5,6) . The probability of getting an odd number on the die when it is rolled is