A bag contains three black balls, four white balls and five red balls. Three balls are removed without replacement. What is the probability of obtaining
a one of each colour
b at least two red balls ?

  1. 👍 2
  2. 👎 1
  3. 👁 1,047
  1. A comittee consist of 6 men and 4 women. A subcomittee is made by randomly choosing three of the comittee members. What is the probability that
    a they are all women
    b two of them are men?

    1. 👍 0
    2. 👎 3
  2. 10 balls at start

    1 prob black, white, red
    = 3/10 * 4/9 * 5/8

    2 prob black, red, white
    = 3/10 * 5/9 * 4/8 same as above

    3 prob white, black, red
    = 4/10 * 3/9 * 5/8 same again

    4 prob white, red , black

    5 prob red , white, black

    6 prob red, black, white

    6 * 3/10 * 4/9 * 5/8

    1. 👍 0
    2. 👎 0
  3. Try the rest now.

    1. 👍 1
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    A bag contains 8 blue and 2 red balls. Three balls are chosen at the same time at random from the bag. What is the probability that exactly two of the balls are the same colour?

  2. Finite Math

    An urn contains sixteen red balls and seventeen white balls. A sample of three balls is selected at random and the number of red balls observed. Determine the probability distribution for this experiment: Number of Red

  3. pshs

    three balls are drawn successively from a box containing 6 red balls,4white balls and 5 blue balls. find the probability that tare hey drawn in the order red,white and blue if each ball is replaced?

  4. Probability

    1. We have a bag that contains n red balls and n blue balls. At each of 2n rounds we remove one of the balls from the bag randomly, and place it in one of available n bins. At each round, each one of the balls that remain in the

  1. physics

    in a bag there are 20 red 30black 40 blue50 white balls. what is the minimum number of balls to be drawn without replacement so that you are certsin about getting 4 red,5 black,6 blue,7 white balls

  2. probability

    there are 4 white balls and 6 red balls in a sack. If two balls are taken out successively ( the first ball is not replaced ) what is the probability that the balls are drawn are of different colors?

  3. Probability

    A bag contains some balls of which 1/4 are red. Forty more balls of which 5 are red are added. If 1/5 of all the balls are red, how many balls was there originary?

  4. Math

    "In vase A, there are 3 red balls and 5 white balls. In vase B, there are 6 red balls and 4 white balls. Two balls are to be drawn at random, without replacement, from each vase. What is the probability of selecting 4 red balls?"

  1. math

    A sample of 4 balls is to be selected at random from an urn containing 18 balls numbered 1 to 18. Five balls are green, 6 balls are white, and 7 balls are black. (a) How many different samples can be selected? (b) How many samples

  2. math

    a box contains 5 red balls,7 green balls ,and 6 yellow ball.In how many ways can 6 balls be choosen if there should be 2 balls of each color

  3. Pre Algebra Probability

    Each of two urns contains green balls and red balls. urn 1 contains 10 green balls and 14 red balls. urn 2 contains 4 green balls and 11 red balls. if a ball is drawn from each urn what is p(red and red)? BTW- i really don't know

  4. Finite Math

    A bowl contains 10 red balls, 5 blue balls, and 8 green balls. A woman selects balls at random without looking in the bowl. How many balls must she select to be sure that she has at least one ball of each color?

You can view more similar questions or ask a new question.