The probability and algorithm of rolling the dice twice and at least once, thank you.

The probability of an odd dice roll is 0.5, which is counted as P(A), and the probability of an even dice roll is 0.5, which is counted as P(B).

At least one odd number in two times includes:

The first odd number+the second even number

The first odd number+the second odd number

The first even number+the second odd number

Because these two throws are unrelated events.

Therefore p = p (a) p (b)+p (a) p (a)+p (b) p (a) = 0.75.

In other words, the probability that at least one of the two times is odd is the total probability minus the probability that both times are even.

That is, P= 1-P(B)P(B)=0.75.