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A bag contains 10 red marbles, 3 blue marbles, 7 white marbles, and 5 green marbles. find the probability of picking one of each four colours in the first tries without the marbles being replaced.

 Jun 16, 2018
 #1
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10 + 3 + 7 + 5 = 25 total number of marbles.

10/25 red marble x 3/24 blue marble x 7/23 white marble x 5/22 green marble =1,050/303,600 =0.0034585 x 100 =o.34585% - probability of  picking one of each colors on the first try.

 Jun 17, 2018
edited by Guest  Jun 17, 2018
 #2
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Hi guest,

You have chosen them in the order red blue white green. but they can be chosen in any order 

So I think you answer should be multiplied by  4!

Melody  Jun 17, 2018

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