# Probability 65634

There are seven red balls and 13 blue balls in the pocket. How many blue balls do we need to add to the pocket so that the probability of removing the red ball is 0.2?

### Correct answer:

Tips for related online calculators

Need help calculating sum, simplifying, or multiplying fractions? Try our fraction calculator.

Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

Would you like to compute the count of combinations?

Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

Would you like to compute the count of combinations?

#### You need to know the following knowledge to solve this word math problem:

#### Grade of the word problem:

## Related math problems and questions:

- Probability 29163

There are ten red, six blue, and eight green balls in the hat. What is the probability that a randomly selected ball is blue or red? - Probability 7672

There are eight white balls and several blue balls in the pocket. The probability of pulling out the white ball is 2/3. How many blue balls are in your bag? - Probability 36081

There are 6 white and several red balls in the box. How many red balls must there be so that the probability of drawing a red ball is less than the probability of drawing a white ball or greater than the probability of drawing a white ball? - Probability RGB

The bag has six red, five green, eight blue, and 11 yellow balls. What is the probability that we will pull out a green ball? - White and black balls

There are seven white and three black balls in an opaque pocket. The balls are the same size. a) Randomly pull out one ball. What is the probability that it will be white? We pull out one ball, see its color, and return it to the pocket. Then we pull out - Probability 8280

We have ten white, ten red, and ten blue balls in our pockets. We selected five white, two red, and three blue balls. What is the probability that we will pick a white ball in the next move? - Balls 8358

We have five red, four blue, and seven white balls in the bag. At least how many balls do we have to pull out to have at least one white ball on the table? - Probability 3835

We have four red, three blue, six yellow, and two black balls in the bag. Find the probability of pulling the blue or red ball. - White balls

I have three white balls and five red balls in my pocket. How many balls do I have to remove from the bag to ensure the pulled-out ball is red? - Unmistakable 3609

We put 5 blue, 4 red, and 7 yellow balls in an unmistakable bag. Fero's task is to draw a yellow ball while blindfolded. How many marbles must Fero draw to be sure that a yellow marble will be among the ones drawn? - A box

A box contains 6 red, 5 blue, and 4 white balls. Find the probability of drawing a) a red ball and b) a non-white ball. - Probability 41211

We have five red and seven white balls in a hat. What is the probability of pulling: a) a red ball? b) a white ball? - Busi has

Busi has a bag containing twenty balls. There are twice as many yellow balls as blue balls, but the yellow balls are only a third of the red balls. The green balls are the same number as the blue balls. How many are each color ball? - Red balls

The bag has three red, 12 blue, and eight green balls. How many red balls must we add to the bag if we want the probability of pulling out the red balls to be 20%? - One green

In the container are 45 white and 15 green balls. We randomly select five balls. What is the probability that there will be one green ball maximally? - Green - Red

We have 5 bags. Each consists of one green and 2 red balls. From each, we pull just one ball. What is the probability that we don't pull any green ball? - Arrangements 68764

We have two identical blue balls and two identical red balls. We arrange them in a row in all ways. How many different arrangements are there?