Yes,you are right with the following extra explanation that ;
We faced to a few cases(events),in our real life daily,that their occurrences are inevitable
but their math probabilities are still get you numbers that show uncertains!!

With thanks for your answers;

I meant that ; sometimes we get a probability ratio of for example of : 1/ 5 ∧ 23 from a calculation

but,in fact,a number of; 1/ 5 ∧ 8 for that is perfectly the absolute answer.

With thanks for your answer;
I mean that there are many cases in which, when we calculate and get a probability ratio number like that; P(A),but
in real for Pa(A) less than P(A),the absolute and certain answer is Pa(A) .