math

posted by .

A bag contains 2 white marbles, 4 blue marbles, and 5 red marbles. Three marbles are drawn from the bag. What is the probability that not all of them are red?

  • math -

    First find the prob that ALL of them ARE red, which is
    (6/11)(5/10)(4/9) = 2/33

    So the prob that not all of them are red
    = 1-2/33
    =31/33

  • math -

    There are 5 marbles in a box. One is black, one is yellow, one is red, one is purple and one is orange.

    Please answer this

  • math -

    The answer is 5 marbles in a box. One is black, one is yellow, one is red, one is purple and one is orange.

  • math -

    It will be 5/5 because it 's only one each

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. prealgebra

    a bag contains 6 red marbles, 5 yellow marbles, 7 blue marbles, and 4 white marbles. if one marble is drawn at random from the bag, what is the probability that it will be white?
  2. math

    the bag contains 20 red marbles and30 white marbles and 40 blue ones what is the ratioof red to blue marbles what is the ratio of white to red if one marble is drawn from the bag what is the probability that the marble will not be …
  3. Math

    A bag contains 4 green marbles, 6 red marbles, and 2 white marbles. Three marbles are drawn at random with replacement. With replacement means that after a marble is drawn, it is replaced before the next one is drawn. Find the probability …
  4. Discrete Math

    A bag contains 5 red marbles, 4 yellow marbles, 3 green marbles, 2 orange marbles and 2 purple marbles. If three marbles are removed, what is the probability that at least one of them is red?
  5. 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?
  6. 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?
  7. 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?
  8. Math "Need Help Asap"!

    1.)There are 35 marbles in a bag:9 blue marbles, 8 marbles, 4 red marbles, 4 red marbles, 8 white marbles, & 6 yellow marbles. Find P(Red). Write the probability as a fraction in simplest form, a decimal, & a percent. A.)4/31, 0.129, …
  9. Math

    A bag contains 4 blue marbles and 4 red marbles. If three marbles are drawn in a row without replacement, find the probability that the marbles will be the same colour?
  10. Maths

    A bag contains marbles of three different colours red, blue , yellow. 2/5 of the marbles are red. The ratio of the number of blue marbles to the number of yellow marbles is 5:7. What fraction of the marbles in the bag is blue?

More Similar Questions