Question

In an urn, there are 20 balls of four colors: red, black, yellow and blue. For each color, there are 5 balls and they are numbered from 1 to 5.

1) If one ball is randomly drawn from the urn, what is the probability that the randomly selected ball is red or blue?

2) If one ball is randomly drawn from the urn, what is the probability that the randomly selected ball is numbered 1 or blue?

Answer #1

In an basket, there are 20 eggs of four colors: red, black,
yellow and blue. For each color, there are 5 eggs and they are
numbered from 1 to 5.
1) If one egg is randomly drawn from the basket, what is the
probability that the randomly selected egg is red or blue?
2) If one egg is randomly drawn from the basket, what is the
probability that the randomly selected egg is numbered 1 or
blue?
3) If two...

Suppose that:
Urn U1 contains 3 blue balls and six red balls, and
Urn U2 contains 5 blue ball and 4 red balls
Suppose we draw one ball at random from each urn. If the two
balls drawn have different colors, what is the probability that the
blue ball came from urn U1?

Urn 1 contains 7 red balls and 3 black balls. Urn 2 contains 4
red balls and 1 black ball. Urn 3 contains 4 red balls and 3 black
balls. If an urn is selected at random and a ball is drawn, find
the probability that it will be red.
enter your answer as a decimal rounded to 3 decimal places

Urn A contains two red balls and eight blue balls. Urn B
contains two red balls and ten green balls. Six balls are drawn
from urn A and four are drawn from urn B; in each case, each ball
is replaced before the next one is drawn. What is the most likely
number of blue balls to be drawn? What is the most likely number of
green balls to be drawn?

There are two urns. The first urn has three red, one blue and
four yellow marbles. The second urn has two red, four blue and two
yellow marbles. If you draw one marble from each urn, what are the
probabilities of the following events?
What is the chance of getting two blue marbles?
What is the chance of getting no blue marbles?
What is the chance of getting at least one yellow marble?
What is the chance that the marbles...

Urn 1 contains 7 red balls and 3 black balls. Urn 2 contains 1
red ball and 3 black balls. Urn 3 contains 3 red balls and 1 black
ball. If an urn is selected at random and a ball is drawn, find the
probability that it will be red.
Enter your answer as a fraction in simplest form or a decimal
rounded to 3 decimal places.

Urn 1 contains 4 red balls and 3 black balls. Urn 2 contains 1
red ball and 3 black balls. Urn 3 contains 4 red balls and 2
black balls. If an urn is selected at random and a ball is
drawn, find the probability that it will be red.
Enter your answer as a fraction in simplest form or a decimal
rounded to 3 decimal places.
P(red)=

An urn has 15 white balls, 13 green balls, 10 yellow balls, and
12 red balls. Determine the probability that it will come
out:
a. A red ball
b. A green ball
c. A white ball
d. A red ball and a yellow ball
e. A ball that is not green
Calculate the probability that the number 89 will come out when
taking a ball from a bag with 120 balls numbered from 1 to 120.
Calculate the probability that...

An urn contains 5 red and 9 pink balls. Four balls are randomly
drawn from the urn in succession, with replace
ment. That is, after each draw, the selected ball is returned to
the urn. What is the probability that all 4 balls drawn from the
urn are red? Round your answer to three decimal places.

An urn contains 9 red balls, 7 blue balls and 6 green
balls. A ball is selected and its color is noted then it is placed
back to the urn. A second ball is selected and its color is noted.
Find the probability that the color of one of the balls is red and
the color of the other ball is blue.
A. 0.2603
B. 0.2727
C. 0.4091
D. 0.3430

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