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
110 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)
Find the value of sinh(cos(arccot(2))) - log(tan(arcsinh(0.5))).
+
Question: List three characteristics of the cube root function f(x) = ∛x.
+
Question: What is the value of x in log₂(x) - log₂(x - 3) = log₂(8)?
+
New questions in Mathematics
1 + 1
-6n+5=-13
5(4x+3)=75
Find the equation of the normal to the curve y=x²+4x-3 at point(1,2)
how many arrangement can be made of 4 letters chosen from the 8 letters of the world ABBSOLUTE
By direct proof, how can you prove that “The sum of any three consecutive even integers is always a multiple of 6”.
5.- From the probabilities: 𝐏(𝐁) = 𝟑𝟎% 𝐏(𝐀 ∩ 𝐁) = 𝟐𝟎% 𝐏(𝐀 ̅) = 𝟕𝟎% You are asked to calculate: 𝐏(𝐀 ∪ 𝐁)
If 0101, what is the binary representation of the 4x16 decoder output?
What is 28 marks out of 56 as a percentage
Two business partners have a bank balance of $17,942.00. After the first year their interest brings their balance to $18,928.91. What rate of interest is earned?
suppose random variable x follows poisson distribution with expected value 3. what is variance of x?
Calculate the value of a so that the vectors (2,2,−1),(3,4,2) and(a,2,3) are coplanar.
From 1975 through 2020 the mean annual gain of the Dow Jones Industrial Average was 652. A random sample of 34 years is selected from this population. What is the probability that the mean gain for the sample was between 400 and 800? Assume the standard deviation is 1539
effectiveness of fiscal and monetary policy under closed and open economies
A diamond ring was reduced from $999.99 to $689.99. Find the percent reduction in the price. Round the answer to the nearest tenth of a percent, if necessary.
Calculate the area of the parallelogram with adjacent vertices (1,4, −2), (−3,1,6) 𝑦 (1, −2,3)
What is the total amount due and the amount of interest on a 3-year loan of $1,000 at a simple interest rate of 12% per year?
22. Let [AB] be a chord in a circle C, and k a circle which is internally tangent to the circle C at a point P and to the chord [AB] at a point Q. Show that the line P Q passes through the midpoint of the arc AB opposite to the arc APB.
5a-3.(a-7)=-3
f(x)= 9-x^2 find (f(x+h)-f(x) )/h