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3 years ago

A bag contains 5 RED beads, 3 BLUE beads, and 4 GREEN beads. If a single bead is picked at random, what is the probability

Mathematics

1 answer:

Xelga [282]3 years ago

8 0

Answer:

total number of beads :-

5+3+4=12

probability is :-

<u>number of times a specific outcome has occurred</u>

total number of possible outcomes

red beads - 5/12

blue beads - 3/12

green beads - 4/12

the above given fractions are the probabilities of each color bead.

Step-by-step explanation:

hope this helps, if yes please can u give me a brainly?

i would really apreciate it...

have a great day ahead :)

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A group consists of seven men and five women. Three people are selected to attend a conference.

Dima020 [189]

Answer:

a) 220

b) 10

c) 4.55% probability that the selected group will consist of all women.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the people are selected is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

a. In how many ways can three people be selected from this group of twelve?

$C_{12,3} = \frac{12!}{3!(12-3)!} = 220$

b. In how many ways can three women be selected from the five women?

Three women, from a set of 5. So

$C_{5,3} = \frac{5!}{3!(5-3)!} = 10$

c. Find the probability that the selected group will consist of all women.

Desired outcomes:

3 women from a set of 4. So

$D = C_{5,3} = \frac{5!}{3!(5-3)!} = 10$

Total outcomes:

3 people, from a set of 12. So

$T = C_{12,3} = \frac{12!}{3!(12-3)!} = 220$

Probability:

$p = \frac{D}{T} = \frac{10}{220} = 0.0455$

4.55% probability that the selected group will consist of all women.

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3 years ago

"jimi has 5000 songs on his ipod shuffle, which picks songs uniformly at" random. jimi plans to listen to 100 songs today. what

Furkat [3]

Answer:

about 63.1%

Step-by-step explanation:

For the first song, it is certain it isn't a duplicate. For the second song, the probability that it is not a duplicate is 4999/5000. The probability the third song is not a duplicate is 4998/5000.

Hence the probability that none of the 100 songs is a duplicate is ...

5000!/4900!/5000^100 ≈ 0.369120

Then the probability that one or more is a duplicate is ...

1 - 0.369120 ≈ 0.630880

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Mrrafil [7]

Answer:
y = -1/2x + 14

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Mashcka [7]

Answer:

$\frac{x}{6}$

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Answer:

Here you go

Step-by-step explanation:

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