Sunday

February 1, 2015

February 1, 2015

Number of results: 38,073

**STATISTICS**

There are 10 colored balls in a box ( 5 red, 3 blue, 2 green ). What is the probability of picking out a red ball and then a blue ball ( If I do not replace the red ball
*June 2, 2010 by Jake*

**STATISTICS**

There are 10 colored balls in a box ( 5 red, 3 blue, 2 green ). What is the probability of picking out a red ball and then a blue ball ( If I do not replace the red ball )? 1/6 1/2 3/20 4/5
*June 7, 2010 by Jake*

**statistics**

Suppose a box has eight differently colored tennis balls in it. The colors are green, blue, red, purple, orange, black, and white. if I will randomly pick out three balls (without replacement), then what is the probability that the balls chosen will be green, yellow, and red (...
*June 12, 2012 by Sarah*

**Probability -- Help?**

Sampling one at a time with replacement from a bag with 8 blue, 7 red, and 5 green. What is the probability of getting at least two red in 3 draws? The book says the probability is 0.2818 but doesn't explain why. Any help???? Unfortunately, the probability of picking 3 red ...
*December 1, 2006 by Cheri*

**Probability again**

A box contains 6 red balls, 4 blue balls, and 2 green balls. Three balls are randomly drawn (without replacement) from the box. What is the probability that the three balls selected are all the same color?
*November 29, 2009 by Ryan*

**Statistics**

I have two boxes with balls; box #1 and box #2. Box #1 has 3 red balls and 2 blue balls.Box #2 has 7 red balls and 3 blue balls. what is the probability that if a red ball is picked, it is from box #1
*September 13, 2011 by Paula Arcila*

**math**

A box contains 8 blue balls and 2 red balls. Three balls are selected from the box at random without replacement. Find the probability that two balls are blue and one ball is red.
*May 2, 2011 by Suetusi*

**statistics**

A jar contains 7 red balls, 5 green balls, 4 blue balls, and 3 white balls. A sample of size 7 balls is selected at random without replacement . Find t the probability that sample contains two red balls, 2 green balls, 2 blue balls, and 1 white ball.
*December 26, 2014 by kp*

**probability**

A jar contains 3 red balls and 2 green balls. You draw one ball at random. Determine the probability of selecting a. red b. green c. blue d. red or green
*March 17, 2011 by Evangelina*

**math**

In a box there are 3 red, 3 blue and 3 green balls. If 3 balls are picked from the box randomly, one by one, with replacement, what is the probability that none of them will be blue?
*December 21, 2014 by protik*

**Conditional Probability**

A box contains 1 green ball, 2 blue balls, and 3 red balls. These balls are selected at random, one after another without replacement, and their colors are noted. Find the conditional probability that the third ball is red given exactly one ball is red.
*September 20, 2012 by Sarah*

**Maths**

There are 3 green balls,5 red balls and 2 yellow balls in a bag.You take out one without looking.What is the probability of picking out a yellow ball?
*March 13, 2014 by Sibongakonke*

**math**

There are 25 red beads,x blue beads and y green beads in a box.When a bead is picked at random,the probability that it is blue is 1 over 4 and the probability that it is green is 1 over 3. (a)Find the value of x and y. (b)How many blue beads must be added so that the ...
*July 7, 2014 by mandy*

**Math**

Assume that you are drawing two balls without replacement from an urn that contains 13 green balls, 10 blue balls, and 1 red ball. What is the probability that you will draw a blue balls and a red ball?
*June 12, 2014 by Sarah*

**Math**

Probability-- There are two boxes...the first box has 3 black balls and 1 blue ball in it. The second box has 6 black balls and 2 in blue balls in it. a. Which of the following two boxes would you choose if you were picking 1 ball and wanted black? Justify your answer. b. Then...
*November 12, 2013 by Anonymous*

**algebra**

Sharon has 24 colored paper clips in her desk drawer:12 are red, 8 are yellow, and 4 are blue. She also has 28 pushpins in her drawer: 11 are white, 14 are orange, and 3 are green. 1. If she picks one paper clip, what is the probability that it will be either blue or yellow.4/...
*January 13, 2015 by kennedy*

**8th Grade Probability**

A box contains 6 red balls, 4 white balls, and 5 green balls. If three balls are drawn in succession without being replaced, what is the probability that they are drawn in the order red, white, green?
*February 14, 2011 by Elizabeth*

**statistics**

Box A contains 4 red and 6 blue balls. Box B contains 5 red and 10 blue balls. A box is selected at random and a ball is drawn. Find the probability that the ball is blue, given that it came from Box B.
*September 22, 2010 by Lori*

**statistics**

Box A contains 4 red and 6 blue balls. Box B contains 5 red and 10 blue balls. A box is selected at random and a ball is drawn. Find the probability that the ball is blue, given that it came from Box B.
*September 22, 2010 by Lori*

**Statistics**

Box A contains 4 red and 6 blue balls. Box B contains 5 red and 10 blue balls. A box is selected at random and a ball is drawn. Find the probability that the ball is blue, given that it came from Box B.
*September 23, 2010 by Lori*

**Math**

A box contains 20 red balls and 40 green balls . Four balls are randomly selected from the box without replacement. What is the probability of selecting a red ball followed by a green ball and then another red ball followed by a green ball?
*January 22, 2014 by Kristen*

**statistics**

1. In a large box are 20 ping-pong balls—10 of them are red and numbered 1 through 10, and the other 10 of them are green and also numbered 1 through 10. Two balls are selected from the box without replacement. 1. a.Find the probability that the first ball selected is red and ...
*September 26, 2009 by John*

**probability**

A jar contains 3 red balls and 2 green balls. You draw one ball at random. Determine the probability of selecting a. red b. green c. blue d. red or green p.s: the reason I am asking this questions is because we never learned about it in class and I don't know how to do it; so ...
*March 17, 2011 by Evangelina*

**maths**

there are six red balls and nine blue balls in a box.a ball is selected at random.find the probability that the ball is (a)red(b) blue ( c) red of blue
*May 2, 2014 by joyce Rowley*

**maths**

there are six red balls and nine blue balls in a box.a ball is selected at random.find the probability that the ball is (a)red(b) blue ( c) red or blue
*May 2, 2014 by joyce Rowley*

**math**

A box contains 6 red balls, 4 white balls, and 5 green balls. If three balls are drawn in succession without being replaced, what is the probability that they are drawn in the order red, white, green?
*April 25, 2011 by Lo*

**maths-urgently needed(probability)**

A bag contains 5 red, 4 blue and an unknown number of m green balls. Two balls are drawn. If probability of both being green is 1/7 find m.
*February 18, 2013 by Anonymous*

**Finite**

A box contains 8 blue balls, 3 white balls, and 5 red balls, and that we choose two balls at random from the box. What is the probability of neither being blue given that neither is white?
*September 25, 2014 by Jess*

**math**

If I have 25 balls in a bowl 10 black,5 blue ,5 green ,5 red . what is the probability of me pulling out a red? 1/5 ,4/5,2/10,1/25 etc....
*December 7, 2012 by robert*

**math**

A bag has balls of four colours - red,blue,green and pink.Half the total number of balls are pink. One-fourth of the number of green balls equals one-third of the numher of blue balls. The number of pink balls is 4 less than twice the total number of green and blue balls. The ...
*November 13, 2014 by Suzanne*

**Probability help!?**

I have a bag of 20 m&m's. 6 are red; 7 are blue; 4 are green; 3 are yellow. if I took one out, what is the probability of picking yellow??? Help. t.y. Pr yellow= waystogetyellow/total= 3/20 Is there a way to illustrate this? thank you. (for some reason, I am having a hard time...
*March 4, 2007 by Jose*

**Math**

John has a box that contains one red ball and one blue ball. Every minute he reaches into the box and randomly takes out a ball from it (without looking). No matter which ball he took out, he puts it back together with another ball of the same color. Thus, after n minutes, the...
*July 1, 2013 by Alex*

**math**

John has a box that contains one red ball and one blue ball. Every minute he reaches into the box and randomly takes out a ball from it (without looking). No matter which ball he took out, he puts it back together with another ball of the same color. Thus, after n minutes, the...
*July 5, 2013 by GT*

**Basic Mathematics**

A bag contains 2 red balls, 3 blue balls and 5 green balls. 3 balls are drawn at random. Find the probability that a) the 3 balls are of different colours b) 2 balls are of the same colour c) all the 3 are of the same colour.
*May 23, 2014 by Shammi*

**statistics**

A jar contains 2 red balls, 2 blue balls, 2 green balls and 1 orange ball. Balls are randomly selected, without replacement, until 2 of the same colour are obtained. Calculate the probability that more than 3 balls must be selected.
*August 7, 2014 by Koala*

**College Finite Math**

Your Open QuestionShow me another » If the ball is either blue or white, what is the probability that it was drawn from urn Y? Assume that you randomly pick one of the urns: X, Y, or Z. You then randomly draw one ball out of the selected urn and note its color. The urns ...
*April 2, 2009 by Nahla*

**maths **

A box contains 20 balls, of which 5 are red, 5 are blue, 5 are white and 5 are green. Suppose a sample of 5 balls are chosen without replacement. a) find the probability that the sample contains balls of all the same colour (answer is 4/ 20C5, but why isnt it 5/20C5??) b) find...
*October 11, 2012 by Candice*

**probability**

There are two identical boxes of balls. In the first box 2 blue and 5 orange balls, and the second 3 blue and 6 orange balls. Chosen at random from the box and pull out a 1 ball. What is the probability that the ball taken is orange
*August 22, 2012 by hazard*

**Math**

There are a few red and a few green balls in a box, Blind folded, you have to take out 7 balls to have a red for sure,and you have to take out 13 to have a ball from both colours for sure. How many green and how many red balls are there in the box?
*September 16, 2014 by RIZ*

**Math**

a box contains 3 yellow socks, 4 blue, 1 orange, and 2 green....what is the probability of picking 2 blue at the SAME TIME!!!
*August 5, 2012 by Bridgette*

**d**

given piles of identical red, blue and green balls where each pile contains at least 10 balls, how many ways can 10 balls be selected such that exactly two green balls are selected and at most one red ball is selected?
*June 16, 2013 by Anonycmous*

**maths probability**

a box contains 20 red,30 black,40 blue,50 white. what will be the minimum number of balls to be drawn without replacement so that you are certain about getting 4 red,5 black,6 blue,7 white balls? A.140 B.97 C.104 D.124
*June 27, 2014 by my era*

**Physics**

Which combination of primary additive colors will produce yellow-colored light? green and blue blue and red red and green cyan and magenta
*October 26, 2012 by oehtiwh*

**Physics**

Which combination of primary additive colors will produce yellow-colored light? green and blue blue and red red and green cyan and magenta
*October 26, 2012 by Hola*

**Physics**

Which combination of primary additive colors will produce yellow-colored light? green and blue blue and red red and green cyan and magenta
*October 29, 2012 by Confused*

**Math**

A bag contains 5 balls,8 white balls, 9 green balls,7 blue balls& 6 yellow balls.A ball is drawn at random .Find the probablity that the ball in neither green nor red ?
*March 8, 2012 by Rajit Rastogi*

**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 the ball in bag b. You then select a ball from...
*February 16, 2011 by Hil-hellpp!*

**Math**

Four balls are simultaneously picked at random from a jar containing 2 red balls, 2 green balls, and 6 yellow balls. What is the probability that exactly two of the selected balls will be red?
*November 15, 2010 by Molly*

**probability problem**

A box contains 6 green, 8 red, 5 yellow, and 10 blue marbles. Four marbles are drawn from the box at the same time. a) What is the probability that all four marbles are the same color? b) What is the probability that none of the marbles is blue? c) What is the probability that...
*February 24, 2012 by Sam*

**math**

Suppose a bag of marbles has 4 green, 2 red, 5 yellow, 1 brown, and 7 blue marbles. What is the probability of picking a green marble, replacing it, and then picking a brown marble?
*January 31, 2012 by Nick*

**Math**

What's the probability of picking out 5 white and 3 red balls from a bag containing 12 white and 3 red balls? That is all the red balls and 5 white from the bag leaving 7 white balls.
*September 19, 2014 by Jake Craddock *

**8th grade math **

A box contains 6 red balls, 4 white balls, and 5 green balls. If three balls are drawn in succession without being replaced, what is the probability that they are drawn in the order red, white, green? A x 8/225 B x 4/91 C x 12/445 D x 1/225...
*April 28, 2011 by Lo*

**Probability**

1. You roll a number cube numbered one to six 12 times. P(5)=2/3. What type of probability is illustrated and why? A. Experimental; the result is based on the number of possible outcomes. B. Experimental; the result is found by repeating an experiment. C. Theoretical; the ...
*April 17, 2014 by Chris*

**math**

There are 5 red balls,6 white balls and 7 green balls in a box.If one ball is taken without looking,what is the probability that it is white?
*January 27, 2013 by Amber lynn V. Lumayao*

**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 Balls/Probability 0...Probability=? 1...Probability=? 2......
*April 5, 2012 by Amanda*

**Math**

A ball pit contains 10 yellow balls and 14 green balls. What is the probability of randomly picking 3 green balls (replacing them), from the pit? 3/24
*January 15, 2014 by Crystal*

**math**

On the plant ZOG,colored coins are used formoney. Suppose 12 white, 9 red, 8 yellow, 4 blue, and 0 green can be exchanged for 2 white, 1 red, 0 yellow, 1 blue ,and 1 green. Also, suppose 1 green = N blue, 1 blue = N yellow, 1 yellow = N red, and 1 red = N white coins. What is ...
*September 16, 2008 by Anna*

**Statistics**

3 balls are drawn successively from a box containing 6red,4 white and 5 blue balls.Find the probability that they are drawn in order red,white and blue if:(a)each ball is replaced.(b)balls are not replaced
*January 20, 2013 by Rose*

**Math**

A bag contains four balls. Three are red, and the fourth is either red or blue, selected with equal probability. A ball is drawn from the ball and it is red. What is the probability that one of the balls still in the bag is blue?
*November 7, 2010 by kyle*

**math**

if you have a bag of chocolate candy, ten are red, 7 are brown, 12 are green, and 9 are blue, what is the probability of you picking a red candy given that you already picked a blue candy and have not replaced it?
*May 16, 2013 by Brandon*

**math**

if a bag has 2 red balls 2 blue balls 2 green balls what is your chance of getting a red ball
*September 3, 2014 by Anonymous*

**math**

A box containing 5 red balls and 3 green balls weighs 43 g. When the box contains 3 red balls and 5 red balls it weighs 37g. When it contains one ball of each it weighs 19g. What is the mass of the box and of each ball.
*December 3, 2012 by Bogusgirl*

**Math**

Tom has a bag filled with 10 green balls, 5 red balls and 5 blue balls, what part on toms bag has green balls
*April 23, 2013 by Gio*

**statistics**

An urn contains 4 blue balls, 5 yellow balls and 7 red balls. if a single ball is selected, find the probability thet the ball is Red? Not blue? blue or yellow
*February 15, 2011 by Andrea*

**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 then yellow balls? How many red balls were in ...
*February 9, 2012 by Helen*

**probability**

a bag contains 7 red balls, 4 green balls and 5 yellow balls. what is the probability that 3 balls drawn at random are either green or yellow?
*March 14, 2012 by anuj*

**Math/Statistics**

I don't get how to do this...can anyone help? 1. In a large box are 20 ping-pong balls—10 of them are red and numbered 1 through 10, and the other 10 of them are green and also numbered 1 through 10. Two balls are selected from the box without replacement. 1. a.Find the ...
*September 27, 2009 by John*

**math**

A bag contains 5 red balls and 7 green balls . A ball is picked at random , its color is noted and it is given out . The bag is shaken and a second selection is made. A. Draw. Tree diagram to illustrate thr information. B. Calculate the probability that both balls are red
*April 24, 2013 by Natasha*

**maths**

a box of red,blue and green pencils contains 20 in all.there are 6 times as many blue pencilas green ones,and fewer rd pencils than blue ones. how many red pencilsare in he box
*February 13, 2011 by chrisopher *

**Writing and solving equations**

The number of green balls is g. The number of red balls is 3 more than the number of green balls, and the number of blue balls is 7 more that the number of green balls. If the number of blue balls is 18, how many green balls are there?
*January 27, 2014 by Anonymous*

**math**

if a bag has one red marble 2 blue marbles and 1 green marble what is the theoretical probability of picking a blue marble?
*October 27, 2011 by Nick Bell*

**Math-Probability**

Hello, I'm trying to figure out this probability problem. Can anyone help walk me through? Thank you so much!! A box contains 10 green, 2 red, 7 yellow, and 6 blue marbles. Four marbles are drawn from the box without replacement. a) What is the probability that all four ...
*August 7, 2009 by Marie*

**Math**

A box containing 20 yellow balls, 9 red balls and 6 blue balls. If the balls are selected at random, what is the smallest number of balls that need to be selected so you will select at least two balls of each colour
*May 4, 2014 by Baby girl*

**math**

The barkleys have a set of plastic picnic cups and dishes that come in 6 different colors. Blue, Red, Green, Yellow , Orange, and Purple. 1. How many possible cup-and-dish combinations can they make with such a set? 2. peter will pick a dish and a cup without looking.What is ...
*January 15, 2012 by john *

**math, 7th**

If there are 100 marbles, 10 red, 20 white, 30 blue, and 40 green, and you were to choose only one out of a bag, what is the probability that it wouldn't be red, white, or blue? The probability would be 40 out of 100 -- or 4 out of 10. What percentage is that? 40% 40% I would...
*February 24, 2007 by morgan*

**English**

1. I have ten balls. Some are red, others are blue, and the other is green. 2. I have ten balls. One is green, some are red, and the others are blue. 3. I have ten balls. One is green, others are red, and the others are blue. ------------------------- Which ones are ...
*July 15, 2014 by rfvv*

**Math**

Bert has a bag with 12 blue marbles, 6 green marbles, 8 purple marbles, and 4 red marbles. If he want the probability of picking a blue marble to be 1/2 what should he do?
*November 27, 2010 by Michelle*

**Algebra**

A bag has 2x+1 red marbles, 3x blue marbles, and x+2 green marbles. What is the probability of picking a red marble?
*May 20, 2014 by Michele*

**math**

draw a cartoon using 5 ballons,2 dogs, 3 ice cream cones,& 4 balls. Color ballons red;color dogs yellow;color cones blue & balls green. What fraction of your balls are red,green, yellow,or blue?
*January 26, 2010 by Tori*

**algebra 2**

In a bag of marbles you have 6 green, 4 yellow, 8 blue, and 2 red marbles. What is the probability of picking a blue marble from the bag?
*January 23, 2015 by Anonymous*

**stats**

A jar contains 7 black balls and 25 red balls. You take 2 out without replacing them. Find a)the probability of drawing 2 red balls in a row, b) the probability of drawing a red ball, then a black ball, c) the probability that the two balls will be of different colors
*December 18, 2014 by Sally*

**math**

A box contains 4 red pens, 5 blue pens, and 9 green pens. Two pens are drawn out of the box without replacement. What is the probability of drawing a red pen on the first draw and the same color pen on the second draw?
*June 11, 2013 by mary*

**mathematics**

a box contains 2 white and 3 blue balls.two balls are picked at random,one after the other without replacement.what is the probof picking two balls of different colours?
*March 27, 2011 by tobi*

**Math**

my problem is: From the box containing 5 red balls, 7 blue balls, 10 black balls. you select 4 balls what is the probabilty that EXACTLY 2 balls are black. so i know how to start it c(10,2)c(2,1) ---------- c(22,40 but how do you solve that ?
*December 13, 2010 by Katia*

**math**

A box holds 2 blue marbles and 6 red marbles. How many and what color marbles could you remove from the bag to make the probability of picking red 1/2?
*February 24, 2012 by unknown*

**Probabilities**

A bag contains 5 red, 3 green, 12 white and 7 blue marbles. One is drawn at random. With is the probability it is green if it is not red or blue?
*April 21, 2009 by Andrey L*

**Finite Math-Probability**

Suppose we have an urn with 10 white balls and 6 red balls, and we create an experiment by randomly selecting 6 balls from the urn. a) What is the probability that the sample has the same number of white balls as red balls? b) What is the probability that there are more red ...
*November 24, 2012 by Em*

**science**

A box contains 10 balls of which 6 are red (R) and 4 are white (W) . Three balls are taken from the box at random, one after the other. The probability that the 3 balls drawn are in the order RRW is equal to,
*July 22, 2012 by sajith*

**Probability**

A drawer contains six bags numbered 1-6, respectively. Bag i contains i blue balls and 2 green balls. You roll a fair die and then pick a ball out of the bag with the number shown on the die. What is the probability that the ball is blue? Thank you!
*January 27, 2012 by Erica*

**algebra**

5 green balls and 2 red balls together weigh 10 pounds, and 1 green ball and 4 red balls together weigh 7 pounds. If all red balls weigh the same amount and all green balls weigh the same, then what is the weight of 8 red and 8 green balls together? I'm not sure at all how to ...
*February 17, 2009 by Rachelle*

**math**

A spiiner was spun 16 times. The results are shown in the table below. yellow = 5 white = 4 red = 0 blue = 2 green = 2 orange = 3 whch colors' experimental probability matches its theoretical probability a. yellow, green and orange b. white, red and orange c. yellow, blue and ...
*October 21, 2012 by kyle*

**Math ms sue please please please help!!!!!!**

1)a bag contains five red marbles and seven blue marbles. you pull one marble out of the bag and replace it before putting out a second marble. what kind of event is this? independent, dependent, or both? 2) A bag contains 5 marbles. Without looking, you pick a marble with ...
*November 10, 2013 by Math help*

**statistics**

1. A bag of colored blocks contains the following assortment of colors: red (13), blue (12), orange (21), purple (14), green (14), and yellow (6). Construct the probability distribution for x.
*November 9, 2012 by Anonymous*

**Math**

Each of two urns contains green balls and red balls. Urn one contains 10 green balls and 8 red balls. Urn two contains 3 green balls and 10 red balls. If a ball is drawn from each urn, what is P(red and red)? A. 23/18 B. 10/27 C. 40/117 D. 18/31
*April 17, 2014 by Chris*

**math *check***

8. Each of two urns contains green balls and red balls. Urn one contains 8 green balls and 12 red balls. Urn two contains 5 green balls and 8 red balls. If a ball is drawn from each urn, what is P(red and red)? A. 79/65 B. 24/65 C. 20/33******? D. 2/13
*June 10, 2014 by Me*

**Statistics**

10 A color candy was chosen randomly out of a bag. Below are the results: Color Probability Blue 0.30 Red 0.10 Green 0.15 Yellow 0.20 Orange ??? a. What is the probability of choosing a yellow candy? b. What is the probability that the candy is blue, red, or green? c. What is ...
*November 29, 2014 by Den*

**Math**

There are 20 balls in a bowl. 7 black, 6 blue, 5 green, 4 red, and 3 yellow. Balls must be drawn until 4 different colors are drawn. What is the probability that one is black? Please walk me through if you can...
*October 1, 2011 by Tim*

**Math**

A bag contains 33 balls: 10 blue 11 red and 12 green If a person will select balls at random from the bag without replacement, what is the minimum number of balls needed to be selected in order to be sure that the balls selected include 3 balls of the same color
*December 26, 2014 by Sarah*

**Juba Day SS**

ii) A box contains 10 white, 7 black and 3 green balls. 2 balls are drawn at random. Find out the probability that: a) both are white b) one is white and another is green c) one is black and another is green
*December 19, 2014 by B. David Lawrence*

**Stats**

A bag of colored blocks contains the following assortment of colors: red (18), blue (14), orange (20), purple (14), green (10), and yellow (4). Construct the probability distribution for x. I'm so lost....
*October 24, 2011 by Jennifer*

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