A bag with 10 marbles has 2 yellow marbles, 4 blue marbles, and 4 red marbles. What is the probabillity that it chosen at random and is yellow?

1/5 = 0.2 = 20%

Step-by-step explanation:

Given:

This can also be written as 0.2 or 20%

Step-by-step explanation:

Given:

Alphabet: d

Word: combed

First, we note down the length of the word "combed";

The length is 6 characters

The we check the number of occurrence of d in the word "combed"

Occurrence of d = 1

Probability is then calculated as;

Probability of choosing d =

By Substitution; Probability =

Given:

Roll number = 7

Sample Space= {2,4,8,9,4, 7}

Sample Size, n(S) = 6

We check the number of occurrence of 7 in the sample space

Number of occurrence = 1

Probability is then calculated as;

Probability of rolling a 7 =

By Substitution; Probability =

Given

Red = 12

Green = 10

Yellow = 2

Blue = 19

Purple = 9

Total = 12 + 10 + 2 + 19 + 9 = 42

Probability of picking a green marble is then calculated as;

Probability of choosing d =

By Substitution; Probability =

Probability =

Step-by-step explanation:

Given:

Alphabet: d

Word: combed

First, we note down the length of the word "combed";

The length is 6 characters

The we check the number of occurrence of d in the word "combed"

Occurrence of d = 1

Probability is then calculated as;

Probability of choosing d =

By Substitution; Probability =

Given:

Roll number = 7

Sample Space= {2,4,8,9,4, 7}

Sample Size, n(S) = 6

We check the number of occurrence of 7 in the sample space

Number of occurrence = 1

Probability is then calculated as;

Probability of rolling a 7 =

By Substitution; Probability =

Given

Red = 12

Green = 10

Yellow = 2

Blue = 19

Purple = 9

Total = 12 + 10 + 2 + 19 + 9 = 42

Probability of picking a green marble is then calculated as;

Probability of choosing d =

By Substitution; Probability =

Probability =

P(a blue marble then a green marble) is 4/105 ⇒ 1st answer

Step-by-step explanation:

* Lets explain how to solve the problem

- There are 2 green marbles

- There are 4 blue marbles

- There are 1 red marble

- There are 8 yellow marbles

- Once a marble is drawn, it is NOT replaced

- We need to find P(a blue marble then a green marble)

* At first lets find the total number of marbles by adding all color

∵ There are 2 green , 4 blue , 1 red and 8 yellow

∴ The total number of marbles = 2 + 4 + 1 + 8 = 15

∴ There are  15 marbles in the bag

∵ Probability = number of events/number of all outcomes

∵ There are 4 blue marbles

∴ The probability of chosen a blue marble is P(blue) = 4/15

∵ Once a marble is drawn, it is NOT replaced

∴ The total number of marbles = 15 - 1 = 14 marbles

∵ The number of green marbles is 2

∴ The probability of chosen a green marble is P(green) = 2/14

∵ P(a blue marble then a green marble) = P(blue) . P(green)

∵ P(blue) = 4/15

∵ P(green) = 2/14

∴ P(a blue marble then a green marble) = (4/15)(2/14) = 4/105

* P(a blue marble then a green marble) is 4/105

a. 210

b. 120

c. 3

Step-by-step explanation:

a) 4 marbles can be drawn in ways

= 210 ways.

b)3 samples of marbles can be drawn in   ways

= 120 ways

c) 2 blue marbles out of 10 marbles in which only 3 are blue =

  = 3 ways

B) 2/9

Step-by-step explanation:

First, the probability of picking a red marble is 5/10, which is the same as 1/2. This is because there are 5 marbles in the bag that are red out of the 10 total marbles. Then, because we don't replace the marble, there are now 9 total marbles, with 1 blue, 1 white, 3 yellow, and 4 red. Now the probability of picking a red marble is 4/9.

Multiplying these two probabilities together gives you the probability of picking 2 red marbles in a row, which is 1/2 * 4/9 which is equal to 4/18, or 2/9 when simplified.

B) 2/9

Step-by-step explanation:

First, the probability of picking a red marble is 5/10, which is the same as 1/2. This is because there are 5 marbles in the bag that are red out of the 10 total marbles. Then, because we don't replace the marble, there are now 9 total marbles, with 1 blue, 1 white, 3 yellow, and 4 red. Now the probability of picking a red marble is 4/9.

Multiplying these two probabilities together gives you the probability of picking 2 red marbles in a row, which is 1/2 * 4/9 which is equal to 4/18, or 2/9 when simplified.

3/10=30%

Step-by-step explanation:

So the total is 10, and there 3 blues. The probability is 3/10 which is equal to 30%. Hope this helps!

3/10=30%

Step-by-step explanation:

So the total is 10, and there 3 blues. The probability is 3/10 which is equal to 30%. Hope this helps!