Sunday

December 21, 2014

December 21, 2014

Posted by **jake** on Saturday, March 12, 2011 at 11:39am.

- math -
**Reiny**, Saturday, March 12, 2011 at 11:57amProb = (6/8)(5/7) , which was your first choice

- math -
**jake**, Saturday, March 12, 2011 at 12:36pm3/4 x 5/7, but that means you presume you took out a blue marble the first time. How do you know that you didn't take out a red marble, so you still have all six blue marbles when you pick the second time?

- math -
**Reiny**, Saturday, March 12, 2011 at 2:26pm"... but that means you presume you took out a blue marble the first time"

yes, that is the case we wanted, and the 6/8 is the probability that would have happened, and one of the blue marbles has now been picked.

**Answer this Question**

**Related Questions**

Math, please check work - A bag contains 7 red marbles, 2 blue marbles, and 1 ...

math - A bag contains red, blue, and orange marbles. If the probability of ...

Math - Bert has a bag with 12 blue marbles, 6 green marbles, 8 purple marbles, ...

math - (1) A bag contains 3 red marbles and 5 blue marbles. Jake will choose 2 ...

Math :) - In a bag of 10 marbles, there are 5 blue marbles, 3 red marbles, and 2...

math - a bag contains 5 blue marbles 4 red marbles and 1 green marble. what is ...

math - if a bag has one red marble 2 blue marbles and 1 green marble what is the...

math - a bag contains 33 green marbles and 25 blue marbles. you select a marble ...

math - 1.A box contains four red marbles, seven white marbles, and five blue ...

Math Probability - In a bag of 10 marbles, there are 5 blue marbles, 3 red ...