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Mathematics 16 Online
OpenStudy (anonymous):

A bag contains 3 red marbles, 4 blue marbles, and 5 white marbles. What is the probability of NOT pulling out a red marble three times if none are replaced?

OpenStudy (anonymous):

SOME BODY HELP

OpenStudy (anonymous):

PLEAESE

OpenStudy (mertsj):

Find the probability of pulling out a red marble 3 times and subtract from 1

OpenStudy (anonymous):

i dont get it

OpenStudy (mertsj):

yes, I will. Sorry

OpenStudy (anonymous):

no not you

OpenStudy (mertsj):

How many marbles are in the bag?

OpenStudy (anonymous):

12

OpenStudy (mertsj):

how many are red?

OpenStudy (anonymous):

3

OpenStudy (mertsj):

What is the probability of drawing out a red marble?

OpenStudy (anonymous):

3/12

OpenStudy (mertsj):

Which is 1/4

OpenStudy (anonymous):

yes

OpenStudy (mertsj):

Now how many marbles are in the bag?

OpenStudy (anonymous):

12

OpenStudy (mertsj):

I thought you just drew out a marble.

OpenStudy (anonymous):

11

OpenStudy (mertsj):

How many of them are red?

OpenStudy (anonymous):

3

OpenStudy (anonymous):

3/11

OpenStudy (mertsj):

I thought you drew out a red marble.

OpenStudy (anonymous):

oh 2/12

OpenStudy (mertsj):

2/11

OpenStudy (mertsj):

Now how many marbles are in the bag?

OpenStudy (anonymous):

11

OpenStudy (mertsj):

How many are red?

OpenStudy (anonymous):

2

OpenStudy (mertsj):

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