Saturday

February 28, 2015

February 28, 2015

Number of results: 96,012

**Probability**

Four red and seven black beans are placed into a bag. If one of the beans is selected at random, determine the odds against the bean being red.
*October 12, 2010 by Liesl*

**math**

mr. lee had a bag of red beans and a bag of black beans. 20% of the total number of beans were black, and there were 180 ounces more red beans than black beans. he transferred some red beans to the bag containing black beans, so that, the bag now contained 30% of the total ...
*July 17, 2014 by john*

**math again**

You have a bag with 60 black jelly beans and 240 red ones. a) If you draw one jelly bean out of the bag, find the probability that it is black. -------60/300= 1/5 b) If you add 60 black jelly beans to the original bag and draw out a bean, what is the probability that it is ...
*February 24, 2010 by kali*

**algebra**

You have a bag with 60 black jelly beans and 240 red ones. a) If you draw one jelly bean out of the bag, find the probability that it is black. -------60/300= 1/5 b) If you add 60 black jelly beans to the original bag and draw out a bean, what is the probability that it is ...
*February 24, 2010 by desperate!*

**statistics**

Four jelly beans are selected, one at a time from a bowl containing 6 black, 6 red and 6 green jelly beans. Let x represent the number of black jelly beans selected in 4 draws from the bowl. (A) If this experiment is completed without replacing the jelly beans, explain why x ...
*November 28, 2010 by kelly*

**Math**

A box has 8 blue and 5 green jelly beans. A bag has 6 blue and 8 green jelly beans. A jelly bean is selected at random from the box and placed in the bag. Then a jelly bean is selected at random from the bag. If a green jelly bean is selected from the bag, what is the ...
*October 24, 2012 by Kerry*

**Math!!!**

Jim bought 1520 g of beans. He used all the beans to make 16 bean bags. How many hrams of beans did he use for each bean bag? - equation format please!
*May 11, 2014 by Dianne G.*

**statistics**

The red face cards and the black cards numbered 2-9 are put into a bag. Four cards are drawn at random without replacement. Find the following probabilities: a) All 4 cards are red b) 2 cards are red and two cards are black c) At least one of the red cards is red. d) All four ...
*December 12, 2010 by oscar*

**Math Probabilities**

A bag contains 9 red chips and 12 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that the two chips are the same color? That would be the probability of two reds PLUS the probability of two blues. The probability of two ...
*March 6, 2007 by J*

**math**

one bag of jelly beans contains 14 red jelly beans. how many red jelly beans would be found in 4 bag of jelly beans
*August 2, 2010 by kamleen*

**Math**

A bag contains 6 black balls,5 red balls and 4 white balls,if 3 are selected at random without replacement determine the probability that (1)all 3 are black (2)all 3 are red (3)2 are black and 1 white (4)at least 1 of each colour is selected.
*September 18, 2011 by Isi*

**Math**

A bag contains 6 black balls,5 red balls and 4 white balls,if 3 are selected at random without replacement determine the probability that (1)all 3 are black (2)all 3 are red (3)2 are black and 1 white (4)at least 1 of each colour is selected.
*September 18, 2011 by Isi*

**maths**

A bag contains 4 red and 3 black balls. A second bag contains 2 red and 4 black balls. One bag is selected at random. From the selected bag, one ball is drawn. Find the probability that the drawn ball is red.
*February 5, 2013 by Anonymous*

**Maths**

Bag A contains 2 white, 1 black and 3 red balls, Bag B contains 3 white, 2 black and 4 red balls and Bag C contains 4 white, 3 black and 2 red balls. One Bag is chosen at random and 2 balls are drawn at random from that Bag. Of the randomly drawn balls happen to be red and ...
*August 17, 2014 by Susan*

**math**

A bag contains 3 red, 5 black and 5 blue marbles. Four marbles are selected at random without replacement: - the probability that all 4 are black? -the probability that exactly two are blue and none are red?
*January 25, 2011 by Sandy*

**Math**

Three blue and five red balloons are each tied to a string and the strings are held together. If one of the strings is selected at random, determine the odds in favor of the balloon being red.
*April 16, 2011 by Valerie*

**math**

In a bag there are red, green, black,and white marbles. If there are 6 red, 8 green, 4 black, and 12 white and one marble is to be selected at random, what is the probability it will be white? I dont know how to solve these.
*August 3, 2011 by Amy*

**Probability**

A jar contains four red, four yellow, and three green jelly beans. If Joan and Jim take one jelly bean each, the probability that they both take a red jelly bean is?
*November 14, 2009 by Anna*

**Math**

Laurie is holding 6 red cards and 7 black cards. If two cards are selected at random(w/out replacement), what is the probability that the first card selected is red and the second is black?
*February 27, 2012 by Jane*

**probability and counting**

(1 pt) A box contains 25 yellow, 28 green and 38 red jelly beans. If 13 jelly beans are selected at random, what is the probability that: a) 5 are yellow? b) 5 are yellow and 7 are green? c) At least one is yellow?
*April 13, 2011 by Hannah*

**loyla**

A bag contains one black ball and one white ball. Another black ball is put into the same bag and bag is shuffled. The first ball pulled out the bag is a black one. What are the chances of the next ball to be pulled out to be black?
*August 15, 2014 by rajshekar*

**Math**

Jake ate seven times more jelly beans as Sam. Together they ate 128 jelly beans. How many jelly beans did each person eat?
*February 11, 2013 by Tanya*

**math**

The ratio of red jelly beans to yellow jelly beans in a dish is 2:3. If I eat 3 red jelly beans and 6 yellow ones the ratos is 4:5. How many yellow jelly beans were orginally in the dish?
*September 9, 2012 by Anonymous*

**MATH CHECK!**

There are 20 red beans in the jar 10 fewer white than yellow half as many orange than red 10 more black than green twice as many yellow as red 5 fewer green as red please check: 10 orange 15 green 25 black 40 yellow 25 pink 30 white
*May 30, 2012 by Celest*

**math**

in a bag of red and black jellybeans, 136 are red and the remainer are black jellybeans. If 15% of the jellybeans in the bag are black, what is the total number of jellybeans in the bag?
*October 19, 2010 by Marie*

**Auburn**

Have a sack of jelly beans-5 different colors-half are red 1/6 green 1/6 yellow 1/12 blue 6 black-how many of each color and how many in all
*April 24, 2012 by Rose*

**stats**

a hat contains a number od cubes: 15 red, 10 white, 5 blue and 20 black,20 years gone and i am back again. one cube at random. what is the probability that it is: a) a red cube? b) not a red cube? c) a cube that is white or black? d) a cube that is neither white nor black? e) ...
*September 28, 2014 by jojo*

**Math**

The ratio of red jelly beans to yellow jelly beans in a dish is 3:4. if greg eats 3 red jelly beans and 6 yellow ones, the ratio is 4;5. how many jelly beans were originally in the dish?
*September 10, 2012 by April*

**Math: Probability**

I need help. Here's the queston. Julia has 3 red marbles, 4 blues,3 yellow and 6 black in a bag. She takes one out at random. The probability its black ___ The probability its yellow ___ The probability it isnt red ___
*February 28, 2009 by Mark*

**maths**

Bag A contains 6 white beads and 3 black beads. Bag B contains 6 white beads and 4 black beads.One bead is chosen at random from each bag. find the probability that both beads are black and at least one of the two beads is white??
*April 12, 2012 by sumaiyah*

**Math**

In a variant of the game Nim, two players alternate taking turns in removing 1, 2, or 3, beans from a pile. The object is to remove the last bean. If the initial pile has 29 beans, should you want to go first or second to guarantee a win?
*January 26, 2011 by Diana*

**Geometry**

With exacty seven horizontal or vertical jumps, remove all seven red checkers leaving the single black checker. There's 8 pieces on a grid, the black is in A1 and and reds are in A2 A3 A4 B1 B2 B3 B4.
*September 7, 2009 by Dallas*

**Math**

The ratio of red jelly beans to yellow jelly beans in a dish is 3:4. If Greg eats 3 red jelly beans and 6 yellow ones, the ratio is 4:5. How many yellow jelly beans were originally in the dish?
*September 11, 2012 by Anonymous*

**math**

Results of a survey of fifty students indicate that 30 like red jelly beans, 29 like green jelly beans, and 17 like both red and green jelly beans. How many of the students surveyed like no green jelly beans?
*November 28, 2010 by Anonymous*

**managerial economics**

Suppose that the demand curve for beans is given by: Q=20-P Where Q is thousands of pounds of beans bought per week and P is the price in dollars per pounds a. How many beans will be bought at P=0 b. At what price does the quantity demanded of beans become zero c. Calculate ...
*July 1, 2010 by Mishal Almandhour*

**math**

The produce manager receives 5 containers of green beans, each weighing 7 pounds. She divides the total amount of green beans into 3 equal weight portions. What is the weight of the beans in each portion?
*November 10, 2013 by Tam*

**Math**

There are 10 marbles in a bag. 5 blue, 3 red and 2 green. If you draw 1 marble at random, What are the odds in favor of drawing a red marble? Is the answer 3/10 or 3/7 ???
*March 5, 2012 by Anonymous*

**math**

A jar contains some red and some yellow jelly beans. If a child ate 1 red jelly bean, 1/7 of the remaining candies would be red. If instead the child ate 5 yellow jelly beans, 1/6 of the remaining candies would be red
*January 28, 2011 by Diana*

**drawing**

21) The number of oil spills occurring off the Alaskan coast A) Discrete B) Continuous Find the odds. 22) When a single card is drawn from an ordinary 52-card deck, find the odds in favor of getting a red 10 or a black 6. A) 2: 25 B) 1 : 13 C) 1 : 25 D) 1 : 12 23) If the ...
*June 10, 2011 by candy*

**algebra **

Four marbles are drawn at random from a bag containing 7 black marbles and 10 red marbles. Determine the number of outcomes in the sample space of this experiment if the marbles are drawn without replacement.
*September 28, 2011 by ally *

**probabilities**

The proportion of red marbels in a large jar of red and black marbels is 0.4 and the percentage of damaged red and black marbels is 0.7. What is the probability of selecting randomly a black and damaged marbel? If you randomly select three marbels, what is the probability of ...
*October 3, 2011 by pete*

**mathematics **

solve this probability :a box contains 10 marble, seven of which are black and three are red.three marbles are drawn,one after the other without replacement. find the probability of choosing 1 red,1 black and 1 red marble. in that order
*February 15, 2015 by fadil*

**math**

danielle has 30 jelly beans and 18 green jelly beans. What is the ratio of yellow jelly beans to greens jelly beans
*February 2, 2012 by Anonymous*

**MATH 12 HELP!**

One bag contains 4 white balls and 6 black balls. Another bag contains 8 white balls and 2 black balls. A coin tossed to select a bad, then a ball is randomly selected from that bag. Suppose white ball was drawn. What is the probability that it came from the first bag?
*May 20, 2012 by the man*

**Statistics**

Suppose a bag contains 7 red chips, 8 black chips, and 3 green chips. You draw two chips (without replacement) from the bag. Find the probability that you drew a red chip ﬁrst and then a black chip second.
*April 30, 2010 by Savannah*

**Math**

Two balls are to be selected without replacement from a bag containing one red, one blue, one green, one yellow, and one black ball. How many points are there in the sample space?
*March 25, 2008 by Kate*

**finite math**

A golf ball is selected at random from a golf bag. If the bag contains 3 black balls, 8 orange balls, and 4 brown balls, find the probability of the event. That the golf ball will be black or orange.
*June 17, 2014 by carol*

**Math**

This bag had 35 green, some black and 3 red marbles. Reaching blindfolded, the probability of picking a red is 1/23. How many black marbles are there.
*May 23, 2011 by Hannah Montana*

**statistics**

A box contains 3 white and 5 black balls. Four balls are drawn at random "with replacement" from the box (i.e. selected balls are returned to the box and mixed, before drawing the next ball). Let X be the number of black balls drawn. What is the distribution of X? What is the ...
*April 13, 2012 by Anonymous*

**math**

When a single card is drawn from an ordinary 52-card deck, find the odds in favor of getting a red 10 or a black 6. I think the answer is 1:12. Is that correct?
*April 25, 2010 by KiKi*

**pre calculus**

A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is probability that it is not black? 1/2 2/9 5/9 7/9 14/19
*November 27, 2012 by king chris*

**math214**

If you have a jar of 1000 jelly beans and you know that P(blue) =4/5 and P(red) = 1/8, list several things you can say about the beans in the jar
*February 25, 2010 by Anonymous*

**math**

Barstucks is making a new coffee blend. The company bought 50lbs. of Kona beans at $34.95 per lb. and plans to mix these beans with Columbian beans that sell for $7.99 per lb. wholesale. If Barstucks wants its cost of the blend to be $11.95 per lb., how many lbs. of Columbian ...
*April 20, 2011 by zee*

**Maths**

A music store offers a prize to a customer who can guess the closest, the number of jelly beans that fill a litre jar on the counter. estimate the number of jelly beans in the jar if 1 jelly bean is approximately 2cm (h) by 1.5 cm in diametre (d)
*February 22, 2011 by Riah*

**science**

Listed below are six mixtures. Identify physical properties of the components that allow you to separate them. Then, explain the method you would use to separate the components. Mixture 1: Salt dissolved in water Physical Properties: Density Method of Separation: Use a spoon ...
*October 24, 2011 by Hope*

**math**

A music store offers a prize to a computer who can guess the closest, the number of jelly beans that fill a litre jar on the counter. Estimate the number of jelly beans in the jar if 1 jelly bean is approximately 2cm long (h) by 1.5cm in diameter(d)
*February 24, 2011 by Leah*

**English**

1. The puma is chasing the deer. 2. Do you like rice cake? This rice cake has red beans. Some believe that red beans chase away ghosts and bring good luck. It's just superstition, right? 3. Americans eat turkey on Thanksgiving Day. However,Turkey is a country. You can not eat ...
*October 4, 2009 by Tom*

**math**

From a set of eight marbles, five red and three white, you choose one at random. What are the odds in favor of choosing a red marble
*August 12, 2010 by kirk*

**4th grademath**

A serving of green beans is 125 g. The cafetreia has 10 5 kg cans of green beans. does the cafeteria have enough green beans to server 350 studens?
*February 10, 2014 by mythreyee*

**Math**

In a rack of 15 billiard balls and one ball is selected at random what are the odds in favor it being a ball other than the 8 ball. I thought it would be 1/15 but I am not sure. Anyone help me on this?
*April 19, 2011 by Gerri*

**math**

The Standard blend of coffee uses 4 oz arabica beans and 12 oz of robusta beans per package; the Deluxe blend uses 10 oz of arabica beans and 6 oz of robusta beans per package. The merchant has 80 lbs. of arabica beans and 90 lbs. of robusta beans available. Find a system of ...
*April 11, 2014 by anonymous*

**Math**

A bag contains 7 black socks, 12 white socks, and 17 red socks. If you pick one sock at random from the bag, what is the probability that it will NOT be white? A. 1/2 B. 2 / 3 C. 3 / 4 D. 7 / 12 E. 7 / 36
*June 4, 2014 by Anonymous*

**Math**

Trying to find how many jelly beans that can be in the jar? Exactly half were red and exactly one-third were blue, which of the following is not a reasonable number of jelly beans that can be in the jar? Is it 24, 50, 60 or 90?
*April 23, 2012 by Marc-Anthony Cienfuegos*

**math**

A jar contains 21 red, 4 black, 12 orange, and 18 pink marbles. A marble is drawn at random. P(black) I think 4/55
*March 13, 2014 by Anonymous*

**7th Grade Math Ms. Sue!**

Use the information below to answer questions 1–5. You can write the letters K-A-N-S-A-S on cards and mix the cards in a hat. 1. What is the probability of picking an N? (1 point) one-sixth one-fifth five over one six over one 2. What is the probability of picking an S? (1 ...
*April 19, 2013 by Gabby*

**chemistry**

which is the most reactive form of phosphorus? blue, red, white or black? or are they all equally reactive? I suppose its a matter of how you define reactive but I would go with white since that reacts at room temperature with oxygen of the air to creat heat and burn whatever ...
*April 23, 2007 by naty girl*

**Finite**

Bowl one contains 3 black and 2 white balls. Bowl two contains 4 black and 5 white balls. Experiment: A ball is randomly selected from bowl one, its color noted, and it is placed in bowl two. Then a ball is randomly selected from bowl two. a.) What is the probability that the ...
*November 20, 2006 by Aubrey*

**Elmentary Math for Teachers II**

From a set of eight marbles, five red and three white, we choose one at random. What are the odds in favor of choosing a red marble?
*February 8, 2013 by Tracy*

**algebra**

I have beans that sell for $9 per pound and $12 per pound, they need to be mixed to create 100lbs of mixture that will sell for $11.25 per pound . How much of each type of bean should be used in the mixture? X=#lbs beans that sell for $9.00/lb. Y=#lbs beans that see for $12.00...
*March 20, 2007 by Tony*

**math**

Ms.lee class had to guess how many jelly beans were in a jar. The clues were that exactly half were red ,and that exactly one third were blue.Based on the information provided ,which of the following is not a reasonable number of jelly beans that can be in the jar? a.24 b.50 c...
*February 28, 2012 by priyal*

**math-Probablity**

Hi, just a few stupid questions about probability. 1. How many different license plates can there be if there is a total of 7 letters (no numbers) (and I'm assuming this has a something to do with permutation. 2. How many different batting line ups can be chosen from a 13 man ...
*April 14, 2011 by Connor*

**math**

ms lee class had to guess how many jelly beans were in a jar. The clues were that exactly half were red ,and that exactly one third were blue.Based on the information provided ,which of the following is not a reasonable no.of jelly beans that can be in the jar? a.24 b.50 c.60 ...
*February 27, 2012 by priyal*

**statistics**

The results of a medical test show that of 66 people selected at random who were given the test, 3 tested positive and 63 tested negative. Determine the odds in favor of a person selected at random testing positive on the test.
*February 24, 2011 by Robert*

**Biology**

In poultry, black color is due to a dominant factor (B). The recessive color is red (b). A red male bird is mated to a black female. They produce many offspring, half of which are black and half red. What are the genotypes of the parents?
*November 30, 2009 by Katelynn*

**statistic **

A roulette wheel has alternating red and black numbered slots into one of which the ball finally stops to determine the winner. If a gambler always bets on black to win, what is the probability of winning at least 24 times in a series of 36 spins? (Note that at least 24 wins ...
*January 27, 2013 by Nickie*

**math**

if kate has 8 red, 4 blue and 4 green jelly beans in her pocket, what is the minimum amount of jelly beans she can bring out of her pocket that will contain all colours?..
*April 13, 2012 by Anonymous*

**math**

An urn initially contains 5 white and 7 black balls. Each time a ball is selected, it’s color is noted and it is replaced in the urn along with two other balls of the same color. Compute the probability that (a) one black and one white is selected. (b) exactly two black balls ...
*November 8, 2014 by rajesh*

**math**

a company bought 50lb of kona beans at $34.95 per lb. and plans to mix these with colombian beans at $7.99 per lb. wholesale. If they want the blend to be $11.95 per lb, how many lbs of colombian beans should they buy?
*April 11, 2011 by Shelly*

**IT/210 CheckPoint Iteration Control Structure**

Need help with this! Uses a while counter loop In front of you is a non-see through bag containing 50 red balls and 50 black balls. You are to design a solution that will allow you to draw one ball at a time until 12 red balls are drawn. At the end of the program you will ...
*September 21, 2011 by Jim*

**Algebra 2**

. A coffee merchant has two types of coffee beans, one selling for $3 per pound and the other for $6 per pound. The beans are to be mixed to provide 100 lb of a mixture selling for $4.98 per pound. How much of each type of coffee bean should be used to form 100 lb of the mixture?
*November 4, 2009 by saRa*

**math**

If you have 30 white lego bricks, 42 red lego bricks, and 45 black lego bricks and you pull them out of a bag one at a time until one is left, what is the probability the last brick will be black
*September 19, 2012 by Madison*

**Prob. & Statistics**

If one event, say Black, has P(.70) and another event, say Red, has P(.30). What is the probability in ten events of alternating choices, Red then Black, and being 100% correct, 90% correct. What should be the expected % correct and what is the standard deviation?
*January 2, 2012 by Joe D.*

**math**

1. A teacher has 10 boys and 12 girls in her grade school class. In how many ways can she select 8 of the children to be in a play if she must select 5 boys and 3 girls. 2. The manager of the various displays in the Acme Fine Clothing Emporium has a window which will hold 4 ...
*July 29, 2012 by kwame*

**Math**

Need help on how to solve this problem.. Five cards are chosen from a deck of playing cards and put into a pile. Three of the cards are red and 2 of the cards are black. A second pile is made using 2 red cards and b black cards. One card from each pile is chosen randomly. The ...
*April 13, 2014 by Brandi*

**Algebra II**

help please There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7 times in 10 selections. Show work.
*April 23, 2014 by Me and I*

**Algebra ll**

Help me with this please There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7 times in 10 selections. Show your...
*April 24, 2014 by Me and I*

**math**

Mary bought and beans from a wholesaler. She then mixed the maize and beans ratio 4:3 she bought the maize as $12 per kg and the beans $4 per kg. if she was to make a profit of 30 %. What should be the selling of price 1 kg of the mixture?
*February 5, 2015 by John*

**math**

Mary bought and beans from a wholesaler. She then mixed the maize and beans ratio 4:3, she bought the maize as $12 per kg and the beans $4 per kg. if she was to make a profit of 30 %. What should be the selling of price 1 kg of the mixture?
*February 5, 2015 by John*

**Algebra II**

Help me with this question please There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7 times in 10 selections. ...
*April 15, 2014 by Me and I*

**math**

if jay eats 1/3 of jelly beans and jack 1/4 of the jelly bean leveing bill with 10 jelly bean how many were there to start with
*January 18, 2013 by Tony*

**math**

Three boxes, labeled A,.B. C, contain 1 red and 2 black balls, 2 red and 1 black balls, and 1 red and 1 black ball, respectively. Compute the terminal probabilities by using the multiplication technique. Then add the terminal probabilities for all the outcomes in which the ...
*July 7, 2013 by Annonymous*

**math**

in each game there are 12 red checkers and 12 black checkers.If tom put all the checkers in the bag and randomly picked 2,what is the probability that both will be black?
*June 7, 2010 by angel *

**Algebra**

3. There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7 times in 10 selections. Show your work. Help! I'm ...
*April 27, 2012 by Liz*

**7th grade Math**

Two bags contain the same number of marbles. In one bag, the ratio of black marbles to white marbles is 4:3. In the other bag, the ratio is 3:2. Which bag contains more black marbles? Thanks!
*January 11, 2012 by Eric*

**Fractions**

Juan ate 1/3 of the jellybeans. Maria then ate 3/4 of the remaining jelly beans, which left 10 jelly beans. How many jelly beans were there to begin with?
*February 6, 2014 by Anonymous*

**math**

The ratio of red jelly beans to yellow jelly beans in a dish is 3.4. If Greg eats 3 red ones and 6 yellow ones, the ratio is 4.5. How many yellow jelly beans were originally in the dish? Do you make 3.4 a fraction and 4.5 a fraction and times them? 3/6 TIMES 4.5 = 12/20 THEN ...
*September 3, 2014 by michele*

**Maths**

Five red cards numbered 1,2,3,4,5 and two black cards both numbered 5 are randomly ordered face-down into a pile. The cards are flipped over one at a time until either the sum of the numbers on the red cards is at least 10, or the sum of the numbers on the black cards is at ...
*April 23, 2013 by OIan*

**Math**

Five red cards numbered 1,2,3,4,5 and two black cards both numbered 5 are randomly ordered face-down into a pile. The cards are flipped over one at a time until either the sum of the numbers on the red cards is at least 10, or the sum of the numbers on the black cards is at ...
*April 25, 2013 by Zeneth*

**statistics**

From a bag containing 6 black and 4 white balls, 2 balls are selected,one after the other,without replacement. Find (a) the probability that they are both black (b)the probability that they are both the same colour, (c) probability that they are different colours.
*May 21, 2011 by Moses joseph*

**Math**

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 ?
*September 27, 2014 by Ariyo*

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