Question

Срочно 20 балов. В урне 40 Шаров 13 синих Шесть зелёных И 21 белый на удачу вынимают два шара какова вероятность вытащить один синий один зелёный шар

Answer 1

По моему 52℅,но это не точно

Answer 2

Calculation of Probability

To calculate the probability of drawing one blue ball and one green ball from the urn, we need to consider the total number of balls in the urn and the number of blue and green balls specifically.

According to the information provided, the urn contains a total of 40 balls, with 13 blue balls, 6 green balls, and 21 white balls.

To calculate the probability, we can use the formula:

Probability = (Number of favorable outcomes) / (Total number of possible outcomes)

In this case, the favorable outcome is drawing one blue ball and one green ball. The total number of possible outcomes is the total number of ways to draw two balls from the urn.

Let's calculate the probability step by step:

1. Calculate the number of ways to choose one blue ball from 13 blue balls: 13 choose 1. 2. Calculate the number of ways to choose one green ball from 6 green balls: 6 choose 1. 3. Multiply the two results to get the total number of favorable outcomes. 4. Calculate the total number of ways to choose two balls from 40 balls: 40 choose 2. 5. Divide the total number of favorable outcomes by the total number of possible outcomes to get the probability.

Let's perform the calculations:

1. Number of ways to choose one blue ball from 13 blue balls: 13 choose 1 = 13. 2. Number of ways to choose one green ball from 6 green balls: 6 choose 1 = 6. 3. Total number of favorable outcomes = 13 * 6 = 78. 4. Total number of ways to choose two balls from 40 balls: 40 choose 2 = 780. 5. Probability = 78 / 780 = 0.1.

Therefore, the probability of drawing one blue ball and one green ball from the urn is 0.1 or 10%.

Please note that the search results provided by You.com did not contain relevant information for this specific calculation. However, the calculation of probability is a well-known concept in probability theory.