Again, assuming fair die, the probability of getting any value when rolling is ... die, the probability of getting a value greater than or equal to 5 is 1/6 + 1/6 = 2/6 = 1/3. ... If a 15 sided die that is numbered from 1 to 15 is rolled once, find the probability of ... If the coin lands as heads, Rob shows you the first number Adam picked.