A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick
a red marble, do not replace it, and pick another red marble?
anonymous
 4 years ago
A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a red marble, do not replace it, and pick another red marble?

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0How many red marbles are there @4everjames ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Similar to last question, just some changes: In the beginning, the probability of a red marble is 3/10 After you've picked the first one and do not replace it, the probability of a red marble is 2/9. So your statement would be: Probability of red and red = Probability of 1st red * probability of 2nd red = (3/10) * (2/9) = 6/90 = 1/15

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Yes.. And what are total number of marbles that bag has?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0@mubzz thanksz!!!! i get it now thanks to u and @waterineyes

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0An easy tip to solve all probability questions: When it says (prob of x) AND (prob of y) you multiply, i.e. (prob of x)*(prob of y) When it says (prob of x) OR (prob of y) you add, i.e. (prob of x)+(prob of y)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok just for review (A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a red marble, replacing it, and then picking a black marble?
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.