Question

Probability problem: let u1 and u2 be two urns each containing 6 balls identical to the hit such that u1 contain 2 red balls, 3 green, and one black; and u2 2 red balls, one green and 3 black. we draw at random and simultaneously 2 balls from u1 and put them in u2, then we draw two balls at random and simultaneously from u2 which we place in u1. what is the probability that the contents of each ballot box will remain unchanged after that? And what is the probability that the contents of the ballot boxes will be interchanged?

179

likes
896 views

Answer to a math question Probability problem: let u1 and u2 be two urns each containing 6 balls identical to the hit such that u1 contain 2 red balls, 3 green, and one black; and u2 2 red balls, one green and 3 black. we draw at random and simultaneously 2 balls from u1 and put them in u2, then we draw two balls at random and simultaneously from u2 which we place in u1. what is the probability that the contents of each ballot box will remain unchanged after that? And what is the probability that the contents of the ballot boxes will be interchanged?

Expert avatar
Rasheed
4.7
105 Answers
Pour résoudre ce problème, nous allons utiliser les règles de la probabilité.

Premièrement, déterminons la probabilité que le contenu de chaque urne reste inchangé.

Étape 1: Calcul de la probabilité que les boules tirées de u1 restent dans u1.

La probabilité de tirer une boule rouge de u1 est \frac{2}{6} .

Après avoir tiré une boule rouge de u1, il reste 5 boules dans u1 et 3 boules rouges dans u2.

La probabilité de tirer une deuxième boule rouge de u1 est donc \frac{3}{5} .

La probabilité que les deux boules tirées de u1 restent dans u1 est alors \frac{2}{6} \times \frac{3}{5} = \frac{6}{30} .

Étape 2: Calcul de la probabilité que les boules tirées de u2 restent dans u2.

La probabilité de tirer une boule rouge de u2 est \frac{2}{6} .

Après avoir tiré une boule rouge de u2, il reste 4 boules dans u2 et 2 boules rouges dans u1.

La probabilité de tirer une deuxième boule rouge de u2 est donc \frac{2}{4} .

La probabilité que les deux boules tirées de u2 restent dans u2 est alors \frac{2}{6} \times \frac{2}{4} = \frac{4}{24} .

Étape 3: Calcul de la probabilité globale que le contenu de chaque urne reste inchangé.

Les deux tirages sont indépendants, donc nous multiplions les deux probabilités précédentes pour obtenir la probabilité globale :

\frac{6}{30} \times \frac{4}{24} = \frac{1}{20} .

Donc, la probabilité que le contenu de chaque urne reste inchangé est de \frac{1}{20} .

Maintenant, calculons la probabilité que le contenu des urnes soit interchangé.

La probabilité que le contenu des urnes soit interchangé est complémentaire à la probabilité que le contenu de chaque urne reste inchangé. Donc,

Probabilité du contenu des urnes interchangé = 1 - Probabilité que le contenu de chaque urne reste inchangé.

Probabilité du contenu des urnes interchangé = 1 - \frac{1}{20} = \frac{19}{20} .

Réponse :

La probabilité que le contenu de chaque urne reste inchangé est de \frac{1}{20} .

La probabilité que le contenu des urnes soit interchangé est de \frac{19}{20} .

Frequently asked questions (FAQs)
Question: In how many ways can 5 people be arranged in a line?
+
What is the solution to the equation 4x + 9 = 37?
+
Question: For the sine function f(x) = sin x, what is the amplitude, period, and range of the graph?
+
New questions in Mathematics
Add. 7/w²+18w+81 + 1/w²-81
12-6x=4x+2
What is the amount of interest of 75,000 at 3.45% per year, at the end of 12 years and 6 months?
a) A tap can supply eight gallons of gasoline daily to each of its 250 customers for 60 days. By how many gallons should each customer's daily supply be reduced so that it can supply 50 more customers for twenty more days?
The length and breadth of my rectangular vegetable garden is 12,5m and 7,25m respectively. What is the perimeter of the garden?
Two numbers differ by 7, and the sum of their squares is 29. Find the numbers.
An integer is taken at random from the first 40 positive integers. What is the probability that the integer is divisible by 5 or 6?
A regional candy factory sells a guava roll at a price of $48, the monthly fixed costs amount to $125,000 and the variable cost for making a guava roll is $28. Determine: a) The equation of the total income from the production of guava rolls.
A vaccine has a 90% probability of being effective in preventing a certain disease. The probability of getting the disease if a person is not vaccinated is 50%. In a certain geographic region, 60% of the people get vaccinated. If a person is selected at random from this region, find the probability that he or she will contract the disease. (4 Points)
In an audience of 4000 people, 2 people are chosen, at random, to appear on stage. How many ways can the people be chosen?
Which of the methods below can be used to workout 95% of an amount? a. Dividing the amount 100 and multiply by 95 b. Working out 5% of the amount and taking it away from the full amount c. Dividing 95 by 100 and multiplying the answer by the amount d. Dividing the amount by 95 and then multiply by 100
Buffalo Company makes and sells shampoo. Each unit requires $1.40 labor costs, material costs per unit are $0.90 and other variable costs are $0.30. It sells shampoo for $4.45 to retailers. Fixed costs are $15,000. It sold 25,000 units in the current month. What is the Break-Even point in units? What is the Break-Even point in dollars? What is the contribution margin of Buffalo Company?
Calculate the area of the parallelogram with adjacent vertices (1,4, −2), (−3,1,6) 𝑦 (1, −2,3)
a) 6x − 5 > x + 20
To verify that a 1 kg gold bar is actually made of pure gold, a dynamometer is used to record the weight of the bar submerged in water and out of water. a) What would be the value of the weight of the ingot recorded by the dynamometer out of the water? b) What magnitude of thrust does the ingot receive when it is submerged? c) What would the weight of the ingot have to be when it is submerged? Data Pagua = 1000 kg/m³ Pagua= 19300 kg/m³
Identify the slope and y intercept y=11+2/3x
did an analysis of dropout from the nursing faculty at the Universidad Veracruzana. With a poblation of 122 students, it turned out that according to the gender data, the female sex predominates with 82%, and the male sex male is found with 12%. The main factors why students drop out are, first of all, "Not "re-enrolled" at 49%, second place "Personal reasons" at 20%, third place "change of school" in 11%, "lack of documents" and "economic reasons" in 7%, change of residence and lack of social service in 3%. Of this sample, how many students dropped out for other reasons?
t+72/t=-17
(3.1x10^3g^2)/(4.56x10^2g)
A plant found at the bottom of a lake doubles in size every 10 days. Yeah It is known that in 300 days it has covered the entire lake, indicate how many days it will take to cover the entire lake four similar plants.