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a bag contains 8 red,4,blue,and 4 yellow marbles. What is the probability of randomly choosing 2 blue marbles without replacement

 Aug 19, 2015

Best Answer 

 #1
avatar+17746 
+5

There are 16 marbles, 4 of them blue.

The probability of getting a blue marble on the first draw is 4/16.

Now there are 15 marbles, 3 of them blue.

The probability of getting a blue marble on the second draw is 3/15.

These are independent events, so the total probability is found by multiplying the two probabilities together:  4/16 x 3/15  =  1/20.

 Aug 19, 2015
 #1
avatar+17746 
+5
Best Answer

There are 16 marbles, 4 of them blue.

The probability of getting a blue marble on the first draw is 4/16.

Now there are 15 marbles, 3 of them blue.

The probability of getting a blue marble on the second draw is 3/15.

These are independent events, so the total probability is found by multiplying the two probabilities together:  4/16 x 3/15  =  1/20.

geno3141 Aug 19, 2015

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