math

posted by .

A bucket contains 7 red, 3 blue, 2 black and 1 yellow ball of the same size.
A random selection of 5 balls is taken from the bucket.
find the probability that the random selection will contain atleast 1 red ball?

  • math -

    pr(1 or more red)=1-pr(no red)

    = 1-(6/13)(5/12)(4/11)(3/10)(2/9)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. probability

    If 2 cards are drawn at random from a standard deck of cards with no replacement, find the probability that both cards are heart I had 13/52 multiplied by 12/51 to get an answer of 1/17 A bucket contains 4 red, 2 yellow, and 3 green …
  2. College Math

    A bucket contains orange tennis balls and yellow tennis balls from which 5 balls are selected at random, but assume that the bucket contains 7 orange balls and 6 yellow balls. (1) What is the probability that, of the 5 balls selected …
  3. math 157

    A box contains three black balls and two golden balls. A ball is selected at random, it's color is recorded and it is then replaced. A second ball is selected at random, it's color is recorded it is then replaced. The outcome is associated …
  4. FINITE

    selection of colored balls from two bags. Assume that each bag contains 4 balls. Bag a contains 2 red and 2 white, while bag b contains 2 red, 1 white, and 1 blue. You randomly select one ball from bag a, note the color, and place …
  5. Math

    A bucket contains blue balls and yellow balls. the probability of removing two blue balls without replacement is 2/5 and he probability of removing three blue balls without replacement is 1/5. Why must there be two more blue balls …
  6. math

    A bag contains 11 red balls, 9 blue balls and x yellow balls. The probabilty of choosing a yellow ball at random is 1/6. What is the probability of not getting a blue ball.
  7. MATHS

    A bucket contains 5 green tennis balls, 2 yellow tennis balls, and 6 red tennis balls. Tony removes 3 tennis balls,with replacement, from the bucket shown. What is the probability that the first tennis ball is yellow, the second tennis …
  8. MATH

    Tony has a bucket filled with 10 green, 3 blue, 1 red, and 7 yellow tennis balls. He removes 4 tennis balls from the bucket, without replacement. Which of the following outcomes could represent this selection?
  9. maths

    Tony has a bucket filled with 10 green, 3 blue, 1 red, and 7 yellow tennis balls. He removes 4 tennis balls from the bucket, without replacement. Which of the following outcomes could represent this selection?
  10. math

    Consider a box that contains 14 red balls,12 blue balls and 9 yellow balls.A ball is drawn at random and the color is noted and then put back inside the box.Then,another ball is drawn at random.Find the probability?

More Similar Questions