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A bag has 4 red marbles, 5 white marbles, 6 blue marbles, and 7 green marbles. Three marbles are drawn from the bag (without replacement). What is the probability that they are all the same color?

 Jun 26, 2022
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Assume all the marbels are different.  

the number of ways that three blues can be chosen is   6C3 

the number of ways that three white can be chosen is    5C3

the number of ways that three red can be chosen is      4C3

 

the number of ways any 3 can be chosen is   18C3

 

Can you finish it?

 Jun 27, 2022

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