The probability of not rolling it ever is 0.
For n rolls it is (5/6)n so
for 10 rolls it is 0.1615
for 20 rolls it is 2.608*10-2
for 100 rolls it is 1.207*10-8 and so on.
Chat with our AI personalities
1/6
It is 1/6.
It is 1/6
The probability of rolling a 5 on a roll of a single number cube is 1/6 (0.1666) as there is only one number 5 on a total of 6 sides on the cube.
The composite numbers on an ordinary cube are 4 and 6 so the probability of rolling a composite is 2/6 = 1/3