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Suppose a jar is filled with 7 red marbles and 3 green marbles. What is the probability of pulling out 2 green marbles in a row if the marbles are not replaced after they're pulled out

User AnIBMer
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1 Answer

3 votes

Answer:

P = 1/15

Explanation:

Extractions:

first green marble:


p=(3)/(10)

second green marble:


p=(2)/(9)

Combination:


p=((3)/(10) )((2)/(9) )=(6)/(90) =(1)/(15)

Hope this helps

User DanielBarbarian
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