Posted by **sharon** on Monday, February 13, 2012 at 6:34am.

6. A bowl contains 10 red balls, 10 green balls and 10 white balls. a. What is the probability of drawing 2 white balls with replacement? b. What is the probability of drawing 2 white balls without replacement?

- math -
**Reiny**, Monday, February 13, 2012 at 8:09am
when balls are replaced

Prob(2white) = (10/30)(10/30) = 1/9

without replacement

prob(2white) = (10/30)(9/29) = 3/29

- math -
**Anonymous**, Friday, March 14, 2014 at 9:00am
78

- math -
**Motherfu**er**, Tuesday, March 24, 2015 at 8:20pm
where is the fu*n solution

- math -
**Batty**, Monday, May 25, 2015 at 10:15am
Probability of getting 2 white balls (W) with replacement is :

P(W) = ( (10/30) * (10/30) ) = 1/9

Probability of getting 2 white balls (W) without replacement is :

P(W) = ( (10/30) * (9/29) ) = 3/29

## Answer This Question

## Related Questions

- statistics - A jar contains 7 red balls, 5 green balls, 4 blue balls, and 3 ...
- Finite Math-Probability - Suppose we have an urn with 10 white balls and 6 red ...
- Math - A bag contains three black balls, four white balls and five red balls. ...
- Finite Math - An urn contains sixteen red balls and seventeen white balls. A ...
- 8th Grade Probability - A box contains 6 red balls, 4 white balls, and 5 green ...
- statistics /pure maths - A box contains N identical balls of which 4 are Red, 3 ...
- Statistic - A urn contains 21 red balls, 14 white balls If we randomly select 2 ...
- Math - Assume that you are drawing two balls without replacement from an urn ...
- math - A box contains 6 red balls, 4 white balls, and 5 green balls. If three ...
- College Discrete - An urn contains n > 0 white balls and m > 0 black ...

More Related Questions