A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick
a red marble, do not replace it, and pick a yellow marble?
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OpenStudy (sidsiddhartha):
there are total (4+3+3)=10 marbels ok
OpenStudy (sidsiddhartha):
now what is the chance of picking a red marbel from 10 marbels
OpenStudy (anonymous):
3 out of 10
OpenStudy (sidsiddhartha):
yeah
OpenStudy (anonymous):
how do I make that a different answer
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OpenStudy (anonymous):
okay
so a 1 out of 9 chance
OpenStudy (anonymous):
so 1 out of 10
OpenStudy (sidsiddhartha):
do u get it?
OpenStudy (anonymous):
I did, but would you mind helping me with others as well?
OpenStudy (anonymous):
A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a red
marble, replacing it, and then picking a blue marble?
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OpenStudy (sidsiddhartha):
so if ur gonna pick a yellow marble it will be =3/9=1/3
OpenStudy (anonymous):
my choices for an answer does not have that as a possible answer
OpenStudy (sidsiddhartha):
now for the second question u have total 15 marbel
so u can choose a red in 5/15 way and then a blue in6/15 ways
so required prob=(5/15)*(6/15)=6/5