Hello!
In a dice, we have six faces:
1, 2, 3, 4, 5, 6
What's the probability of rolling a 5?
So, we have to write a fraction with the number of events in the numerator and the total of possibilities in the denominator, like that:
We can write the probability of it happens as:
1:6 or also 13.89%
Among the alternatives, the most correct is likely.