Wednesday

February 10, 2016
Number of results: 24,370

**Math, please check work**

A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability of choosing a marble that is not blue? 7+2+1=10 There are two blue marbles So is the probability 1/5?
*February 21, 2010 by Lyndse*

**probability Please check answer**

A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability of choosing a marble that is not blue? 7 red marbles plus 1 green marble = 8/10 = answer = 4/5
*May 2, 2010 by Bart*

**math**

A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability of choosing a marble that is not blue? I have seen so many different answers on this site to this question and am not sure. I thought it would be 7 red...
*November 27, 2010 by m*

**math**

An urn contains 5 red marbles, 4 blue marbles, and 3 green marbles. A marble is selected at random and then, without replacing the first marble, a second marble is selected at random. What is the probability of selecting a green marble and then a red marble?
*November 16, 2011 by Melissa*

**Math liberal Arts**

A bag contains 5 red marbles, 4 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability that it is not blue?
*November 19, 2014 by Jamie*

**Math**

A bag contains nine red marbles, four green marbles, three blue marbles, and two yellow marbles. If Lisa draws a random marble from the bag, what is the probability that it will be a red, green, or blue marble?
*April 18, 2014 by Lyla*

**math**

A bag contains 7 blue marbles, 5 red marbles, and 9 green marbles. A marble is taken at random from the bag. What is the probability that the marble is blue or red? Please type in your answer as a fraction.
*May 26, 2010 by John*

**math **

a bag contains 5 blue marbles 4 red marbles and 1 green marble. what is the probability of drawing a blue marble,the another blue marble without replacement
*December 18, 2012 by bryce*

**algebra 2**

A bag contains 7 blue marbles, 5 red marbles, and 9 green marbles. A marble is taken at random from the bag. What is the probability that the marble is blue or red? Please check my answer 12/21
*May 26, 2010 by John*

**Math 1 9th grade**

A bag contains 3 green marbles and 6 blue marbles. What is the probability of drawing a blue marble, then another blue marble, then a green marble, replacing the marble after each draw?
*January 20, 2011 by Sandra*

**math**

a bag contains 33 green marbles and 25 blue marbles. you select a marble at random from the bag. find the theoretical probability of selecting a blue marble. thanks Pr(blue)= number blue/total marbles
*April 13, 2007 by dillon*

**statistics**

a jar contains red and blue marbles. two marbles are chosen without replacement. the probability of choosing a red marble and then a blue marble is .26, and the probability of selecting a blue marble first is .43. what is the probability of selecting a red marble on the second...
*November 12, 2014 by karen*

**math**

A bag has 4 red marbles, 4 blue marbles, and 2 green marbles. Jessie draws a marble from the bag at random, notes the color, and then replaces the marble.She then draws a second marble at random.What is the probability that both the marbles are green? a. 1/45 b. 1/25 c. 1/5 d...
*April 17, 2014 by thomas*

**math**

1.A box contains four red marbles, seven white marbles, and five blue marbles. If one marble is drawn at random, find the probability for each of the following: a.A blue marble is drawn: ______ b.A red or blue marble is drawn: _____ c.Neither a blue or red marble is drawn:
*October 9, 2009 by cindy*

**math**

(1) A bag contains 3 red marbles and 5 blue marbles. Jake will choose 2 marbles without looking. What is the probability that he will choose a blue marble followed by a red marble? (2) Suppose Jake wants to pick a third marble from the set in question 1. He has already picked ...
*January 15, 2012 by gary*

**Math**

A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles. What is the probability that you choose a blue marble and then another blue marble, assuming you replace the first marble? A)1/24 B)1/16 C)1/2 D)3/4 D? or C? Sarah rolls a die twice. What is the ...
*October 14, 2015 by Hailey*

**math**

I have a bag that contains 10 red marbles, 9 green marbles, and 6 blue marbles. I reach into it and take one marble at random. Keeping that marble, I reach into the bag again and take a second marble at random. a. What is the probability that the first marble is green and the...
*February 4, 2015 by joanna*

**math**

A bag contains red, blue, and orange marbles. If the probability of randomly selecting a red marble is 0.4 and the probability of selecting a red or blue marble is 0.9 what is the probability of selecting a red or orange marble? In my opinion, the easiest way to solve these ...
*January 25, 2007 by Preston*

**probability**

A bowl contains only red marbles, blue marbles and green marbles. The probability of selecting a red marble from the bowl is 3/13. The probability of selecting a blue marble from the bowl is 2/5. There are fewer than 100 marbles in the bowl. What is the probability of ...
*November 15, 2012 by chocolateman*

**probability math question**

a bag contanins 7 red marbles, 2 blue marbles, and 1 green marble. What is the probabilty of choosing a marble that is not blue?
*March 23, 2014 by Anonymous*

**Math**

Could someone please let me know if I did this problem right? A bag contains seven blue marbles and five red marbles. One marble is drawn at random without replacement, and then a second marble is drawn. What is the probability that the second marble is blue if the first ...
*August 7, 2009 by B.B.*

**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 running a special promotion in which customers ...
*May 4, 2014 by k.k*

**Math**

A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles. What is the probability that you choose a red marble and then a green marble assuming you replace the first marble? A) 1/ 24 B) 5/ 72 C) 5/ 66 D) 5/ 6
*September 2, 2015 by Kaleem*

**Math :)**

In a bag of 10 marbles, there are 5 blue marbles, 3 red marbles, and 2 white marbles. Complete the probability distribution table for drawing 1 marble out of the bag. Draw a: Probability Blue marble 5/10 Red marble 3/10 White marble 2/10 Total: 10 Am I doing this right? Thanks...
*December 6, 2013 by Kamie*

**Geometry**

There are 4 blue marbles, 5 red marbles, 1 green marble, and 2 black marbles in a bag. Suppose you select one marble at random. Find each probability
*January 26, 2015 by Blue*

**Math**

a jar contains green,red,and blue marbles.The probability of choosing a blue marble is 1/3, the probability of choosing a red marble is 1/2,the probability of choosing a green marble is 1/6.If there are 12 marbles in the jar,and then three green marbles are added,what is the ...
*August 15, 2012 by Grace*

**Maths**

A bag contains 10 red marbles, 10 green marbles, 10 yellow marbles and 10 blue marbles. You reach into the bag and grab a marble, then reach into the bag and grab a second marble. The probability that the second marble is the same color as the first marble is ab, where a and b...
*April 15, 2013 by Ian*

**MATH Prob.**

if a bag contains 8 red marbles, 6 blue marbles and 9 green marbles, what is the probability of choosing a blue marble??
*August 8, 2009 by Twg*

**math214**

A box contains four red marbles, seven white marbles and five blue marbles. If one marble is drawn at random, find the probability for each of the following: (a) A blue marble drawn. _____________ (b) A red or a blue marble is drawn. _____________ (c) Neither a red nor a blue ...
*March 8, 2010 by alicia*

**math**

In a jar there are 4 red marbles 5 green marbles and 7 blue marbles. 1 what us the probability of selecting a red marble replacing it and then selecting a blue marble 2 What is the probability of selecting a red marble setting it aside and then selecting a blue marble 3 are ...
*December 17, 2015 by please help*

**MATH**

A bag contains 2 red marbles, 4 blue marbles, and 8 green marbles. What is the probability of choosing a blue marble?
*November 22, 2011 by Anonymous*

**Math help!**

A bag contains 9 blue marbles and 1 green marble. What is the probability of drawing a blue marble followed by a green marble, without replacing the first marble before drawing the second marble? Is the answer 1/9?
*May 30, 2013 by Jacob*

**To Steve**

Sorry here is completed question A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? 1- Randomly choose a marble don't replace it then randomly ...
*March 29, 2014 by Matt*

**Math**

1. A bag contains red, blue, green, and yellow marbles. Seth takes a marble from the bag without looking, records the color of the marble, and then puts the marble back in the bag. He repeats the process until he has recorded the colors of 35 marbles. The chart below shows the...
*January 15, 2015 by Sara*

**math help **

1. A bag contains red, blue, green, and yellow marbles. Seth takes a marble from the bag without looking, records the color of the marble, and then puts the marble back in the bag. He repeats the process until he has recorded the colors of 35 marbles. The chart below shows the...
*June 6, 2014 by may ann*

**math plz help**

The contents of a jar holds 4 red marbles, 7 blue marbles, and 5 green marbles from which you select marbles at random. What is the probability of selecting a red marble, replacing it, and then selecting a blue marble? Show your your work. Is it 4/16 for picking red then 7/16 ...
*April 16, 2015 by Pink*

**Math**

A box contains 3 red marbles, 6 blue marbles, and 1 white marble. The marble are selected at random, one at a time, and are not replaced. Find the probability. P(blue and red) Please help me
*February 2, 2012 by Lisa*

**Math Probability**

In a bag of 10 marbles, there are 5 blue marbles, 3 red marbles, and 2 white marbles. Complete the probability distribution table for drawing 1 marble out of the bag Probability Blue marble Red marble White marble Total:
*March 23, 2010 by Marcie *

**math**

There are two jars, A and B. Jar A contains 7 red and 2 blue marbles, while jar B contains 5 red and 4 blue marbles. You roll a fair die.If you get a 2 or a 3, you pick a random marble from jar A and put it in jar B. You then pick a random marble from jar B. Else you pick a ...
*February 4, 2016 by daniel johnson*

**math**

A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? Randomly choose a marble don't replace it then randomly choose another marble
*March 29, 2014 by Matt*

**math**

A bag contains x marbles. Half of the marbles are blue. Four less than the number of blue marbles are red. The remaining marbles are purple. What is the probability of choosing a purple marble at random? a. 2 b. 4 c. 1/2-(x/2-4)/x d. x/2-4 e. x/2 please answer and explain
*October 25, 2013 by Tomas*

**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**

A bag contains 3 red, 5 yellow, 2 green and 6 blue marbles. If one marble is chosen at random, replaced, and then a second marble is chosen at random, find the probability of obtaining 2 marbles of different colors.
*January 22, 2014 by Bryan*

**pre-algebra**

a bag contains 5 green marbles 2 white marbles 8 blue marbles 9 red marbles and 6 black marbles what is the probability of drawing a white marble replacing it and then drawing a green marble? Answer choices A 1/6 B 1/15 C 1/87 D 1/90 I think its D, but I am not sure and how ...
*February 17, 2011 by Bob*

**algebra2/ Trigonometry**

A bag contains 24 green marbles, 22 blue marbles, 14 yellow marbles, and 12 red marbles. Suppose you pick one marble at random. What is each probability? A. P(yellow) B. P( not blue) C. P( green or red) Tip: High School Math
*June 1, 2014 by khiana*

**algebra**

Jared has a bag that contains 8 blue marbles, 6 red marbles, and 10 green marbles. He selects a marble, replaces it in the bag, and then selects another marble. What is the probability that both marbles are green
*December 16, 2014 by Anonymous*

**Math probability - HELP**

A bag contains 3 red, 5 yellow, 2 green and 6 blue marbles. If one marble is chosen at random, replaced, and then a second marble is chosen at random, find the probability of obtaining 2 marbles of different colors.
*January 23, 2014 by Bryan*

**Math**

***PS: I can't put the diagram so I type it.*** The diagram below shows the contents of a jar from which you select marbles at random. Inside the jar there is 16 marbles. Inside the jar there is 4 red marbles. 7 blue marbles. 5 green marbles. a. What is the probability of ...
*May 8, 2014 by Chloé*

**MATH**

You have a bag of marbles containing 13 red marbles, 8 green marbles, 7 yellow marbles, and 7 blue marbles. What is the probability of drawing a green marble, putting the marble in your pocket and then drawing a yellow marble?
*August 29, 2013 by Kim*

**math**

There are 25 red, blue, yellow and green marbles in a bag. Four of the marbles are blue and the probability of selecting a blue or green marble at random is 40%. Write and solve an equation to determine the number of green marbles in the bag
*March 28, 2011 by maymay*

**math**

You draw 2 marbles from a bag containing 3 blue marbles, 2 green marbles, and 5 red marbles without replacement. What is the probability of drawing a red marble and then a green marble?
*January 4, 2013 by Brenda*

**math**

A bag contains three green marbles, four blue marbles and two orange marbles. If a marble is picked at random than the probability that it is not and orange marble is
*November 3, 2014 by emok*

**math**

A bag contains three green marbles, four blue marbles and two orange marbles. If a marble is picked at random than the probability that it is not and orange marble is
*December 6, 2014 by chow*

**math**

If there are 6 blue marbles and 2 red marbles in a bag, what is the probability of picking a blue marble then another blue marble if you do not replace the first marble P(B,B)? 3/4 x 5/7 or is it 3/4 x 6/7?
*March 12, 2011 by jake*

**math **

a bag contains 7 red marbles, 8 blue marbles and 4 green marbles. what is the probablity of choosing a blue marble?
*June 15, 2012 by Anonymous*

**math**

rene put 2 blue marbles, 2 green marbles, 2 red marbles and 2 white marbles in a bag, if Rene takes 1 marble out of the bag without looking, what is the probability of rene drawing a blue marble?
*January 30, 2014 by Larry*

**algebra 2**

The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag. What is the probability of drawing a blue marble, replacing it, and then drawing a blue marble?
*May 21, 2010 by Thomas*

**Math**

there are 3 red marbles , 3 blue marbles and 1 green marble in a bag. A marble is drawn at random from the bag and not replaced. Then a second marble is drawn. What are all the possible outcomes?
*March 3, 2011 by Help*

**math**

There are 3 red marbles, 3 blue marbles, and 1 green marble in a bag. A marble is drawn at random from the bag and not replaced. Then a second marble is drawn. What are all the possible outcomes?
*March 3, 2011 by Holden*

**math 2**

a bag contains 8 blue marbles 6 red marbles and 4 green marbles .What is the probability of selecting a blue marble, replacing it in the bag and then selecting a red marble ?
*June 25, 2015 by denise*

** experimental probability**

you spin a spinner 50 times. it lands on red 8 times, yellow 12 times, green 20 times, and blue 10 times. based on the results, what is the experimental probility of its landing on green or yellow? thanks I will be happy to critique your work on this. i have a different ...
*April 13, 2007 by dillon*

**Math**

A box contains 3 red marbles, 6 blue marbles, and 1 white marble. The marbles are selected at random, one at a time, and are not replaced. Find the probability. P(red and blue and blue) Please help me
*February 2, 2012 by Mike*

**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 white??? need ansewr fastt plzz
*April 8, 2012 by kristen*

**8th Grade Algebra**

Tim and Sasha have a bag containing 7 red marbles, 3 blue marbles, 6 white marbles, and 4 yellow marbles. Tim reaches in, without looking, pulls out a marble, records the color, and then puts the marble back.Sasha then does the same thing. What is the probability that Tim and ...
*February 18, 2011 by Elizabeth*

**math**

a bag contains 6 red marbles and 2 blue marbles. what is the probability of chosing a red marble and a blue marble at the same time?
*May 5, 2011 by Cassidy*

**Probability?**

A bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. You choose a marble, replace it, and choose again. Find P(red, then blue).
*April 22, 2013 by Katie*

**Math**

If a bag contains 50 marbles with 28 red ones and 22 blue ones. A marble is picked at random from the bag.what is the probability of picking a red marble after a blue marble was picked first?
*March 3, 2011 by Kay*

**algebra 2**

Jeremy and Noor are playing a game where they each draw a marble from a bag, and whoever draws the marble worth the most points wins. Red marbles are worth 1 point, green marbles are worth 2 points, blue marbles are worth 3 points, and white marbles are worth 10 points. There ...
*May 23, 2012 by jenny*

**Math**

A container holds 12 red marbles, 10 blue marbles, and 14 green marbles. You will randomly select two marbles without replacement. -Fill in the probabilities on each branch of the tree diagram. Use the boxes with the fraction bars already provided. -Use the tree diagram to ...
*April 15, 2013 by Annie*

**algebra 2**

A bag contains 4 white marbles, 3 red marbles, 2 green marbles, and 1 yellow marble. what is the probability of reaching in the bag and randomly choosing a white marble?
*March 15, 2010 by zac*

**Math-Geometry**

In a jar there are 18 marbles. There are 3 red marbles, 9 green marbles, 6 blue marbles. What is the probability of drawing (with replacement) a red marble and then a green marble? Please write the answer in fraction form? Show how you did all the work.
*April 19, 2011 by Itreek*

**algebra**

a bag contains 3 green marbles, 2 yellow marbles, and 5 blue marbles. a marble is picked at random and replaced. a second marble is picked at random. what is the probability that the first marble is yellow and the second is not yellow.
*May 25, 2011 by waterman*

**math**

a bag contains 5 blue, 4 red, 9 white, and 6 green marbles. if a marble is drawn at random and replaced 100 times, how many would you expect to draw a green marble?
*March 24, 2012 by toan*

**math**

a jar contains 5 blue marbles, 8 red marbles,4 white marbles,and 3 purple marbles. suppose you pick a marble at random not looking. what is the chance of getting a red marble
*October 20, 2013 by wes*

**statistics**

A bag contains a total of 24 white, red, and blue marbles. A student randomly selects a marble from the bag, records the color, and then returns the marble to the bag. The student repeats the process 24 times. The bar graph shows the results of the student's experiment and ...
*November 12, 2012 by kate*

**7th grade math (probability)**

I'm posting corrections from yesterday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number and choose a red ...
*May 6, 2015 by Alexis*

**conditional probability**

You have two bags of marbles. Bag 1 has 5 red and 6 blue marbles. Bag 2 has 20 green and 5 red marbles. What is the probability of drawing a red marble out of Bag 2, given that you drew a red marble out of Bag 1?
*July 17, 2012 by Anonymous*

**math**

a bag contains 20 marbles containing 8 green, 4 red, 2 blue, 6 yellow. If a person picks out 1 single marble from bag without looking. what is the probability that it will be a red marble?
*September 25, 2012 by Nanette*

**7th grade math (probability)**

I'm re-posting corrections originally from Wednesday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number and ...
*May 8, 2015 by Alexis*

**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*

**harris middle school**

a bag contains 5 red marbles,4 white marbles, and 9 blue marbles. you pick a marble without looking. find the probability of drawing a white marble.
*January 26, 2012 by mary*

**algebra 1 **

The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag. What is the probability of drawing a blue marble, replacing it, and then drawing a yellow marble
*July 21, 2012 by gab*

**Math**

Did I answer this problem right? A bag contains 13 marbles of which 10 are red. A marble is selected at random and replaced. A second marble is then selected at random. What is the probability that both marbles are red? 100/169. Thanks.
*August 7, 2009 by B.B.*

**statistics**

1. Express the indicated degree of likelihood as a probability value. "There is a 40% chance of rain." 2. Find the indicated probability A bag contain 6 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability ...
*August 28, 2007 by george*

**statistics**

1. Express the indicated degree of likelihood as a probability value. "There is a 40% chance of rain." 2. Find the indicated probability A bag contain 6 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability ...
*August 29, 2007 by george*

**math**

sally has a bag with red,blue, and green marbles. She has twice as many blue marbles as red marbles. She has 5 times as many green marbles as red marbles. Altogether she has 24 marbles. How many of each color marble does she have? Explain how you found your answer.
*October 23, 2012 by Anonymous*

**math**

Please help with this question. A bag contains 10 marbles of which 3 are red. A marble is selected at random and replaced. A second marble is then selected at random. What is the probability that both marbles are red?
*July 30, 2010 by jackie*

**Math**

A jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting a. two red marbles? b. a red marble on the first draw ...
*November 29, 2009 by Punkie*

**math**

a bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. you choose a marble, replace it, and choose again. what is P(read, then blue)? A. 77/164 B. 19/41 C. 90/1681 D. 45/41
*May 7, 2014 by help please*

**10th grade**

mary has a bag which contains 5 green marbles, 7 red marbles, and 9 blue marbles. without looking what is the probability of her pulling a red or a green marble
*September 15, 2010 by tune*

**Math**

A bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. You choose a marble, replace it, and choose again. What is P(red,then blue)? A. 77/164 B.19/41 C.90/1681 D. 45/41
*March 5, 2014 by Anonymous*

**math/probability**

A jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting a. two red marbles? b. a red marble on the first draw ...
*October 21, 2009 by jason*

**MATH Prob.**

A jar contains four marbles, each a different color: red, blue, green, and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting a. two red marbles? b. a red marble on the first draw ...
*August 12, 2009 by Twg*

**math**

From a box containing 5 blue marbles,10 red marbles,and 8 yellow marbles,Lisa removed 3 marble,one of which was blue.f she removes one more marble at random,what is the probability that it will be blur? a. 1/4 b. 5/21 c. 1/5 d. 2/7 e. 1/6 please answer and explain
*October 16, 2014 by thomas*

**math**

A bag contains the following marbles:6 red,4 orange,3 yellow,2 blue and 5 green. You choose a marble at random and do not replace it. Then you select another marble. P(red,then blue)3/95 P(orange,then blue) 2/95 P(blue,then yellow) 3/190 P(red,then yellow) 9/190 P(blue,then ...
*January 13, 2015 by kennedy*

**math: easy**

A bag held 3 red marbles, 1 blue marble, and 4 yellow marbles. Lee drew a red marble and did not replace it. What is the probability of drawing a yellow marble next?
*March 27, 2008 by Brooke*

**Math Probability question**

A jar contains four marbles, each a different color: red, blue, green and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting a. two red marbles b. a red marble on the first draw and...
*January 23, 2010 by C.J *

**Math**

A bag held 3 red marbles, 1 blue marble, and 4 yellow marbles. Lee drew a red marble and did not replace it. What is the probability of drawing a yellow marble next? A. 1/4 B. 1/3 C. 1/2 D. 4/7
*May 19, 2015 by Aaron*

**Algebra**

a bag contains 13 marbles of which 10 are red. A marble is selected at random and replaced. A second marble is then selected at random. What is the probability that both marbles are red?
*July 23, 2009 by Joe*

**math**

A bag contains 13 marbles of which 10 are red. A marble is selected at random and replaced. A second marble is then selected at random. What is the probability that both marbles are red?
*March 9, 2010 by babygirl*