Posted by **nicole** on Saturday, April 10, 2010 at 8:35pm.

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?

- Math probability -
**bobpursley**, Saturday, April 10, 2010 at 8:39pm
Pr(both red)=10/13*10/13

## Answer this Question

## Related Questions

- Math - Did I answer this problem right? A bag contains 13 marbles of which 10 ...
- math - Please help with this question. A bag contains 10 marbles of which 3 are ...
- math - A bag contains 13 marbles of which 10 are red. A marble is selected at ...
- Algebra - a bag contains 13 marbles of which 10 are red. A marble is selected at...
- math - An urn contains 5 red marbles, 4 blue marbles, and 3 green marbles. A ...
- Math, please check work - A bag contains 7 red marbles, 2 blue marbles, and 1 ...
- Math probability - HELP - A bag contains 3 red, 5 yellow, 2 green and 6 blue ...
- Math - A bag contains 3 red, 5 yellow, 2 green and 6 blue marbles. If one marble...
- math - A bag has 4 red marbles, 4 blue marbles, and 2 green marbles. Jessie ...
- probability Please check answer - A bag contains 7 red marbles, 2 blue marbles, ...