math

A bag contains 5 red marbles, 6 white marbles, and 8 blue marbles. You draw 5 marbles out at random, without replacement. What is the probability that all the marbles are red?
The probability that all the marbles are red is?
What is the probability that exactly two of the marbles are red?
The probability that exactly two of the marbles are red is ?
What is the probability that none of the marbles are red?
The probability of picking no red marbles is ?

  1. 👍 0
  2. 👎 0
  3. 👁 746
  1. prob(all 5 are red)
    = (5/19)(4/18)(3/17)(2/16)(1/15)
    = 1/11628

    or , if you know how to calculate combinations
    = C(5,5)/C(19,5)
    = 1/11628

    from here we can do
    prob(no red) = 1 - 1/11628 = 11627/11628

    prob(exactly 2 are red)
    = C(5,2)xC(14,3)/C(19,5)
    = 10(364)/11628
    = 91/2907

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Probability

    jeff has 8 red marbles, 6 blue marbles, and 4 green marbles that are the same size and shape. he puts the marbles into a bag, mixes the marbles, and randomly picks one marble. what is the probability that the marble will be blue?

  2. Math

    A bag contains 6 red marbles, 3 white marbles, and 7 blue marbles. You pick a marble without looking. Find the probability of drawing a white marble. Can someone please explain how I would work this out?

  3. Math ~ Check Answers ~

    1. There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P (red). Write the probability as a fraction in simplest form, a decimal, and a percent. a.) 4/31,

  4. math check probability

    5. A bag contains 7 green marbles and 4 white marbles. You select a marble at random. What are the odds in favor of picking a green marble? A. 7:11**? B. 7:4 C. 4:7 D. 3:7 ------------------------------------ 6. Food Express is

  1. Math

    if the bowl contains 5 red marbles 7 blue marbles and 8 white marbles what is the probability you will draw a red or blue marble? 5/20 15/20** 7/20 3/5

  2. Math 7

    In a bag there are 2 red marbles 3 white marbles and 5 blue marbles. Once a marbel is picked it is not replaced. Find the following probabilities: P(red,then white) P(blue, then red) P(red, red, red) P(blue, blue, white)

  3. Math

    A bag contains 9 red marbles, 8 white marbles, and 6 blue marbles. You draw 4 marbles out at random, without replacement. What is the probability that all the marbles are red? 1 The probability that all the marbles are red is...?

  4. math

    A bag contains 8 red marbles, 5 blue marbles, 8 yellow marbles, and 6 green marbles. What is the probability of choosing a red marble if a single choice is made from the bag? is it 8/27 ?

  1. Math geometry

    Please help , I only need the second part of the question Betty picks 4 random marbles from a bag containing 3 white , 4 yellow and 5 blue marbles The probability that exactly 1 of the 4 marbles drawn is blue is (0.3535) . The

  2. Probability!

    A bag contains 5 green marbles , 8 red marbles, 11 orange marbles, 7 brown marbles, and 12 blue marbles. You choose a marbles, replace it, and choose again. what is p(red then blue) 20/43 40/43 20/1849 96/1849

  3. Math

    Tom keeps all of his favorite marbles in a special leather bag. Right now, five red marbles, four blue marbles, and yellow marbles are in the bag. If he randomly chooses one marble to give to a friend what is the probability that

  4. math

    There are 3 white marbles and 7 blue marbles in a bag. Jamie will randomly pick two marbles out of the bag without replacing the first marble chosen. What is the probability of Jamie picking two blue marbles

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