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1.

An urn contains different colored marbles. The probability of drawing two green marbles from the urn without replacement is 320 , and the probability of drawing one green marble is 25 .

What is the probability of drawing a second green marble, given that the first marble is green?

 

1/5

3/8

3/50

1/2

Guest Jun 6, 2018
edited by Guest  Jun 6, 2018
 #1
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K12?? Im on the same question..you ever find the answer?

Guest Jun 6, 2018
edited by Guest  Jun 6, 2018
 #2
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nope. sorry.

Guest Jun 6, 2018
 #3
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Please do not post questions multiple times!

 

As I have stated elsewhere this is a rubbish question.

Probablilities must be between 0 and 1.

Melody  Jun 6, 2018
edited by Melody  Jun 6, 2018
 #4
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so if its between 0 and 1 its 1/5 and 1/2?

Guest Jun 6, 2018
 #5
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I think this question is probably meant to read:

 

"An urn contains different colored marbles. The probability of drawing two green marbles from the urn without replacement is 3/20 , and the probability of drawing one green marble is 2/5 .

What is the probability of drawing a second green marble, given that the first marble is green?"

 

If so, then:

 

.

Alan  Jun 6, 2018

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