The dice were rolled once. Determine the probability that the number of points is equal to three.

To determine the probability, we use the following classical formula: P (A) = n (A) / n,

where n (A) is the number of outcomes favorable to event A, n is the total number of equally possible outcomes.

The number of outcomes favorable to the event is 1 (number 3 is dropped). The total number of outcomes is 6 (the number of faces).

Let us determine the probability that the number 3 will fall out on the roll of the dice:

1/6 = 0.16 (6) ≈ 0.17.

Answer: The probability that a number equal to 3 will be dropped when rolling the dice is ≈ 0.17.