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Mathematics
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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?
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SOME BODY HELP
PLEAESE
Find the probability of pulling out a red marble 3 times and subtract from 1
i dont get it
yes, I will. Sorry
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no not you
How many marbles are in the bag?
12
how many are red?
3
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What is the probability of drawing out a red marble?
3/12
Which is 1/4
yes
Now how many marbles are in the bag?
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12
I thought you just drew out a marble.
11
How many of them are red?
3
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3/11
I thought you drew out a red marble.
oh 2/12
2/11
Now how many marbles are in the bag?
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11
How many are red?
2
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